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Jede Lektion wird aus einem Bestand geprüfter Quellen geschrieben. Das hier ist die vollständige Liste, keine Auswahl.

162 Quellen, davon 152 geprüft. 102 tragen eine erfasste Lizenz. 74 können dir zeigen, was ihnen entnommen wurde.

Law 14 Quellen

Health 11 Quellen

History 10 Quellen

Literature 10 Quellen

  • Bodleian Libraries Digital Collections — OxfordNachschlagewerkLizenz nicht erfasstVolltext nicht abrufbar
  • British Library Discovering LiteratureNachschlagewerkLizenz nicht erfasstVolltext nicht abrufbar
  • Gallica — Bibliothèque nationale de FranceNachschlagewerkLizenz nicht erfasstVolltext nicht abrufbar
  • Library of Congress — Poetry and Literature CenterNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 3 Passagen)
    About This Program | Poetry & Literature | Programs | Library of Congress Top of page Skip to main content Library of Congress Search Everything Audio Recordings Books/Printed Material Films, Videos Legislation Manuscripts/Mixed Material Maps Notated Music Newspapers Periodicals Personal Narratives Photos, Prints, Draw…
  • Library of Congress Literary CollectionsNachschlagewerkLizenz nicht erfasstVolltext nicht abrufbar
  • Perseus Digital Library — Tufts UniversityNachschlagewerkLizenz nicht erfasstVolltext nicht abrufbar
  • Project Gutenberg — Bookshelves (public domain)NachschlagewerkUS-Public-Domain
    Was daraus gelesen wurde (1 von 12 Passagen)
    tribution. Emmy died in February 2017 and is deeply missed by everybody at Distributed Proofreaders. In her work at Distributed Proofreaders, she was directly responsible for adding more than 1,000 e-books, many in the realm of Children’s Literature, to Project Gutenberg. Emmy loved her work and was loved and respected…
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  • Project Gutenberg — Fiction BookshelfNachschlagewerkUS-Public-Domain
    Was daraus gelesen wurde (1 von 16 Passagen)
    Offline Catalogs | Project Gutenberg X Go! Donate About ▼ About Project Gutenberg Reading Options & Kindle Contact Us History & Philosophy Help Pages Offline Catalogs Donate Frequently Downloaded Main Categories Reading Lists Search Options Frequently Downloaded Main Categories Offline Catalogs and Feeds This page tell…
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  • Samevian Canonical Seed (Literature)LehrbuchVolltext nicht abrufbarCC-BY-4.0
    Was daraus gelesen wurde (1 von 4 Passagen)
    Literature encompasses written works with artistic or intellectual value: poetry, prose fiction, drama, essay. Western literary history begins with ancient Greek texts—Homer's Iliad and Odyssey, the tragedies of Aeschylus, Sophocles (Oedipus Rex, Antigone), Euripides, and Aristophanes. The Epic of Gilgamesh (c. 2100 BC…
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  • Standard Ebooks — Public Domain LibraryNachschlagewerkUS-Public-Domain
    Was daraus gelesen wurde (1 von 53 Passagen)
    inrich Kramer The Fall of Robespierre Samuel Taylor Coleridge Robert Southey The Wheels of Chance H. G. Wells The Mummy! Jane C. Loudon The Place Called Dagon Herbert Gorman Hand and Ring Anna Katharine Green The Lost Stradivarius John Meade Falkner Racundra’s First Cruise Arthur Ransome The Man from the Clouds J. Stor…

Religion 10 Quellen

Economics 9 Quellen

  • Bureau of Economic Analysis — Glossary and ArticlesNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 36 Passagen)
    dvance estimate The first estimate of gross domestic product (GDP) and its components for a quarter. It is released 25-30 days after the end of the quarter and is based on source data that are incomplete and subject to revision. Related terms Final estimate Annual input-output (I-O) accounts Set of I-O tables— make tab…
  • Federal Reserve — Consumers and CommunitiesNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 49 Passagen)
    fer to the maintenance periods for which the vault cash can be used to satisfy reserve requirements. All vault cash held during the lagged computation period by "bound" institutions (that is, those whose required reserves exceed their vault cash) plus the amount of vault cash applied during the maintenance period by "n…
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  • Federal Reserve Research PublicationsNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 52 Passagen)
    st exposed to tariff increases? A new measure based on the consumption channel Nick Heyman, Colin J. Hottman , and Ryan Monarch September 2026 Why Gold Didnt Actually Overtake Treasury Securities as the Worlds "Favorite" Reserve Asset Colin Weiss View All Data, Models and Tools FRB/US Model : A large-scale es…
  • IMF Open Access Publications (CC BY 4.0)NachschlagewerkVolltext nicht abrufbarCC-BY-4.0
  • NBER Working PapersbegutachtetLizenz nicht erfasstVolltext nicht abrufbar
  • Nobel Economic Sciences Lectures (Nobelprize.org)begutachtetLizenz nicht erfasstVolltext nicht abrufbar
  • OECD Open Access Publications (CC BY 4.0)NachschlagewerkCC-BY-4.0
    Was daraus gelesen wurde (1 von 6 Passagen)
    The OECD Economic Outlook provides twice-yearly assessments of major economic trends and prospects for OECD countries and selected non-member economies. According to OECD projections, global GDP growth was 3.1% in 2023, with advanced economies growing at 1.5% and emerging market economies at 4.3%. Global trade growth s…
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  • US Bureau of Labor Statistics — PublicationsNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 24 Passagen)
    o subscribe to the BLS Online Calendar. See details below for users of different types of calendars. Instructions for Outlook and Apple iCal Users: Simply click on the link (Note: Link may seem to be broken if you do not have Outlook or Apple iCal installed.) If the link doesn't work for you, try downloading the file a…
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  • World Bank Open Research (CC BY 4.0)NachschlagewerkCC-BY-4.0
    Was daraus gelesen wurde (1 von 4 Passagen)
    Global extreme poverty—defined as living on less than $2.15 per day (2017 PPP)—has declined dramatically over the past three decades. The World Bank estimates that the global extreme poverty rate fell from 36% in 1990 to approximately 9% in 2019, lifting more than 1.2 billion people out of extreme poverty. Progress was…
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Geography 9 Quellen

  • CIA World FactbookNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 4 Passagen)
    The world's total land area is approximately 148.9 million square kilometers (57.5 million square miles), covering about 29.2% of Earth's surface. The remaining 70.8% is water. The largest country by area is Russia at 17.1 million sq km, followed by Canada (10.0 million), the United States (9.8 million), China (9.6 mil…
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  • NASA Earthdata — LearnNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 59 Passagen)
    real-time Capability for Earth observation (LANCE) Harmonized Landsat and Sentinel-2 (HLS) Applied Remote Sensing Training Program (ARSET) Ask the Earthdata Forum Observation Methods Platforms NASA operates state-of-the-art platforms that collect critical information about our home planet. Drill down to the data and to…
  • NOAA Geophysical and Climate DataNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 4 Passagen)
    Bathymetry is the measurement and mapping of the seafloor's topography. NOAA's National Centers for Environmental Information maintains ETOPO, a global relief model of Earth's surface integrating land topography and ocean bathymetry at 15-arc-second resolution. Less than 25% of the ocean floor has been mapped to modern…
  • UN Statistics Division Open DataNachschlagewerkLizenz nicht erfasstVolltext nicht abrufbar
  • US BLS Occupational Outlook Handbook — Cartographers and PhotogrammetristsNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 69 Passagen)
    artographers and Photogrammetrists Do Cartographers and photogrammetrists collect, analyze, and interpret geographic information to create and update maps and related products. Work Environment Although cartographers and photogrammetrists spend much of their time in an office setting, some jobs require travel to locati…
  • US BLS Occupational Outlook Handbook — GeographersNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 101 Passagen)
    stribution of its land, features, and inhabitants. Work Environment Most geographers work full time. Geographers who do fieldwork may travel to foreign countries or remote locations. How to Become a Geographer Geographers typically need at least a bachelor’s degree to enter the occupation. Some jobs require a mas…
  • USGS — Water Resources Mission AreaNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 113 Passagen)
    yees Office of Civil Rights Doing Business Emergency Management Latest Earthquakes Share Social Media Facebook Twitter Linkedin Digg Reddit Pinterest Email Breadcrumb News Breadcrumb News As above, so below? Trends in groundwater and streamflow across the United States 1980-2020 By Water Resources Mission Area August 1…
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  • USGS Scientific Investigations ReportsNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 88 Passagen)
    its science. ASK USGS contact form Contact the subject matter experts at the U.S. Geological Survey. USGS Library website Authorized by Congress in 1879, the U.S Geological Survey Library is recognized as one of the world’s largest Earth and natural science libraries, providing services, collections, and expertise that…
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  • World Bank Open DataNachschlagewerkCC-BY-4.0
    Was daraus gelesen wurde (1 von 20 Passagen)
    World Bank Open Data | Data It seems you are using an older browser. This site is optimized for modern browsers. Please upgrade to a modern browser for the best experience. Data HOME ECONOMIES THEMES DATA & RESOURCES ABOUT English Español Français العربية 中文 World Bank Open Data Free and open access to global developme…

Languages 9 Quellen

Philosophy 9 Quellen

Psychology 9 Quellen

  • Annual Review of PsychologybegutachtetLizenz nicht erfasstVolltext nicht abrufbar
  • APA Open Access ArchivebegutachtetLizenz nicht erfasstVolltext nicht abrufbar
  • CDC — Mental HealthNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 52 Passagen)
    ress Mental Health Data Channel Mental Health Stigma View Menu About Mental Health For Everyone Aug. 20, 2026 Español Get help now If you or someone you know is struggling or in crisis, confidential, free, 24/7/365 help is available. Call or text 988 or chat 988lifeline.org. See Resources for help . Key points Mental h…
  • NIDA — Research Topics (NIH)NachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 42 Passagen)
    n Drug Abuse (NIDA) is the largest supporter of the world’s research on substance use and addiction. Part of the National Institutes of Health, NIDA conducts and supports biomedical research to advance the science on substance use and addiction and improve individual and public health. Look below for more information o…
  • NIH NIMH Research PublicationsNachschlagewerkLizenz nicht erfasstVolltext nicht abrufbar
  • NIMH — National Institute of Mental Health, Health TopicsNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 160 Passagen)
    ansition, you may notice changes to navigation, page layouts, and where some information is located. Learn more and get the latest updates in our Frequently Asked Questions . In Crisis? Call or Text 988 Transforming the understanding and treatment of mental illnesses. Home | Help for Mental Illnesses --> Search the NIM…
  • OpenStax Psychology 2eLehrbuchVolltext nicht abrufbarCC-BY-NC-SA-4.0
  • PubMed Central Psychology OA (CC BY)begutachtetLizenz nicht erfasstVolltext nicht abrufbar
  • Samevian Canonical Seed (Psychology)LehrbuchVolltext nicht abrufbarCC-BY-4.0
    Was daraus gelesen wurde (1 von 4 Passagen)
    Psychology is the scientific study of mind and behavior: perception, cognition, emotion, personality, motivation, social interaction, and psychopathology. Major theoretical schools: Psychoanalysis (Freud—unconscious drives, ego/id/superego, defense mechanisms); Behaviorism (Watson, Skinner—classical conditioning, opera…
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Arts 8 Quellen

  • Arts — MDPI Open Access Journal (ISSN 2076-0752)begutachtetVolltext nicht abrufbarCC-BY-4.0
  • Europeana Collections (CC BY / CC0)NachschlagewerkLizenz nicht erfasstVolltext nicht abrufbar
  • Getty Open Content Program (CC0)NachschlagewerkCC0-1.0
    Was daraus gelesen wurde (1 von 4 Passagen)
    The J. Paul Getty Museum in Los Angeles holds one of the world's preeminent collections of European paintings, drawings, illuminated manuscripts, sculpture, and decorative arts, as well as significant holdings of Greek, Roman, and Etruscan antiquities, and one of the premier photography collections. The Getty Open Cont…
  • Library of Congress — Prints and PhotographsNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 25 Passagen)
    hl, Edward Abbuehl, Edward H. (2) ABCs Abd al-Ghaff r, al-Sayyid, Physician of Mecca Abdalian, L. H. (Leon H.) Abdel-Raheem, Tarek (2) Abdollahzadeh, Yashar Abdulaziz, Mustafah Abdülhamid II, Sultan of the Turks, 1842-1918 (52) Abdulhamid, Ismat Ayman Abdullah Fréres (1279) Abdullah, Hend Abel & Company Abel & Durang. …
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  • Metropolitan Museum of Art Open Access (CC0)NachschlagewerkCC0-1.0
    Was daraus gelesen wurde (1 von 4 Passagen)
    The Metropolitan Museum of Art in New York City holds one of the world's largest and most comprehensive art collections, spanning 5,000 years of history across every region of the globe. Founded in 1870, the Met's permanent collection comprises over 1.5 million works of art, of which approximately 490,000 objects are a…
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  • MoMA Online Collection (CC0)NachschlagewerkCC0-1.0
    Was daraus gelesen wurde (1 von 4 Passagen)
    MoMA's photography collection, established in 1940 as the first curatorial department of photography at any major art museum, holds over 25,000 works tracing the medium's history from its 1839 origins to contemporary practice. The department's founding under Beaumont Newhall established photography as a fine art form w…
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  • National Endowment for the Arts — Research PublicationsNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 20 Passagen)
    dership and Staff What Is the NEA Publications National Endowment for the Arts on COVID-19 Open Government Freedom of Information Act (FOIA) Office of the Inspector General Civil Rights Office Appropriations History Make a Donation Home Impact Research Research Publications Get Hard Copies of selected publications by c…
  • Smithsonian Open Access (CC0)NachschlagewerkCC0-1.0
    Was daraus gelesen wurde (1 von 4 Passagen)
    The Smithsonian Institution, established by an Act of Congress in 1846 using a bequest from British scientist James Smithson, is the world's largest museum and research complex, comprising 19 museums, 21 libraries, 9 research centers, and a zoo. The institution's collections total approximately 155 million objects, spe…

Mathematics 8 Quellen

Occupations 8 Quellen

Environment 7 Quellen

  • EPA Environmental ResearchNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 9 Passagen)
    Research Centers Planning, Budget, and Results Organization Chart EPA History EPAs Report on the Environment (ROE) What is an ROE Indicator? EPA's Report on the Environment (ROE) indicators are simple measures that track the state of the environment and human health over time. Learn about ROE indicators Explore ROE Ind…
  • IPCC Assessment ReportsNachschlagewerkLizenz nicht erfasstVolltext nicht abrufbar
  • NASA Climate Change Open DataNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 4 Passagen)
    According to NASA's GISS Surface Temperature Analysis (GISTEMP v4), the global average surface temperature in 2023 was 1.17°C (2.10°F) above the 1951–1980 baseline average—the warmest year in the 144-year instrumental record. The 10 warmest years on record have all occurred since 2010. The long-term warming trend is ap…
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  • NOAA Climate Research PublicationsNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 4 Passagen)
    NOAA data show the global average ocean surface temperature in 2023 was 0.91°C (1.64°F) above the 20th-century average—the highest on record. Ocean heat content in the upper 2000 meters reached record-high levels in 2023, with the Atlantic, Pacific, Indian, and Southern Oceans all setting new records. The ocean has abs…
  • NOAA Climate.gov — Teaching ClimateNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 30 Passagen)
    ome Climate Dashboard Teaching Climate Teaching Energy Toolbox for Climate & Energy Partnership with CLEAN collection View Teaching Climate section Resilience Toolkit About About Us Whats New FAQs Sitemap Facebook BlueSky Twitter Instagram YouTube This website is an ARCHIVED version of NOAA Climate.gov as of June 25, 2…
  • UN Environment Programme Open PublicationsNachschlagewerkLizenz nicht erfasstVolltext nicht abrufbar
  • USGS — Water Science SchoolNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 42 Passagen)
    AQ Connect Water Science School Welcome to the U.S. Geological Survey's (USGS) Water Science School. We offer information on many aspects of water, along with pictures, data, maps, and an interactive center where you can give opinions and test your water knowledge. Escuela de Ciencias del Agua New! Water Cycle Diagram …

Sports 7 Quellen

Technology 6 Quellen

  • CISA — Cybersecurity Best PracticesNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 126 Passagen)
    ts no-cost Cyber Services Cybersecurity Awareness Month KEV Catalog Report A Cyber Issue Breadcrumb Home Topics Cybersecurity Best Practices Share: Opens in a new window Opens in a new window Opens in a new window Cybersecurity Best Practices CISA provides information on cybersecurity best practices to help individuals…
  • NIST — Information Technology LaboratoryNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 54 Passagen)
    enesis Mission to Accelerate AI Innovation WELCOME TO THE INFORMATION TECHNOLOGY LABORATORY The Information Technology Laboratory (ITL) is one of NIST’s six research laboratories. ITL’s mission is to cultivate trust in information technology and metrology and to serve as a trusted source of rigorous, independent, and u…
  • NIST Computer Security Resource Center — Special PublicationsNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 23 Passagen)
    aft) NISTIRs. ITL Bulletins: Current list of NIST Information Technology Laboratory (ITL) Bulletins. White Papers: Consists of NIST Cybersecurity White Papers; NCCoE Project Descriptions, Building Blocks and Use Cases; and other NIST-authored papers that are not part of a formal series. Includes current (Final and Draf…
  • OpenJDK Java Language Specification — SE 21NormVolltext nicht abrufbarGPL-2.0-with-Classpath-Exception (code); Spec proprietary Oracle
  • Oracle Java SE Language Specification (JLS)NormVolltext nicht abrufbarProprietary (Oracle)
  • Samevian Canonical Seed (Technology)LehrbuchVolltext nicht abrufbarCC-BY-4.0
    Was daraus gelesen wurde (1 von 6 Passagen)
    Operating Systems manage hardware and software resources. Core functions: process management (scheduling, context switching), memory management (virtual memory via paging/segmentation), file systems (hierarchical storage, journaling), and device drivers. System calls (read, write, fork, exec, mmap) form the user-space/…
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Astronomy 5 Quellen

  • ESA Open Access PublicationsNachschlagewerkCC-BY-4.0
    Was daraus gelesen wurde (1 von 114 Passagen)
    mological parameter results from the final full-mission Planck measurements of the CMB anisotropies. We find good consistency with the standard spatially-flat 6-parameter ΛCDM cosmology having a power-law spectrum of adiabatic scalar perturbations (denoted "base ΛCDM" in this paper), from polarization, temperature, and…
  • NASA SH0ES / Riess et al. 2022NachschlagewerkCC-BY-4.0
    Was daraus gelesen wurde (1 von 118 Passagen)
    , Stefano Casertano , David O. Jones , Yukei Murakami , Louise Breuval , Thomas G. Brink , Alexei V. Filippenko , Samantha Hoffmann , Saurabh W. Jha , W. Darcy Kenworthy , Gagandeep Anand , John Mackenty , Benjamin E. Stahl , Weikang Zheng View a PDF of the paper titled A Comprehensive Measurement of the Local Value of…
  • Nobel Prize Lectures in Physics (Nobelprize.org)begutachtetLizenz nicht erfasstVolltext nicht abrufbar
  • OpenStax Astronomy 2eLehrbuchVolltext nicht abrufbarCC-BY-NC-SA-4.0
  • OpenStax University Physics Volume 1LehrbuchVolltext nicht abrufbarCC-BY-NC-SA-4.0

Sciences 3 Quellen

  • NIST — Physical Measurement LaboratoryNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 57 Passagen)
    on that relies on accounting for measurement errors before testing materials or developing products. ‘Spooky’ Particles Transit DC Suburbs, a Step Toward a Quantum Network August 5, 2026 The achievement shows that fragile quantum entanglement can survive even in tough, real-world conditions. NIST Recognition and Accred…
  • NOAA Ocean Explorer — EducationNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 57 Passagen)
    collected during ocean expeditions that we support, including those on NOAA Ship Okeanos Explorer . Digital data collections typically include oceanographic and geophysical parameters, video, images, documents, and other information, provided in a range of data formats and held in NOAA archives. Physical samples are ar…
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  • USGS Science ExplorerNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 41 Passagen)
    Maps Overview The National Geologic Map Database (NGMDB) is a distributed archive of geoscience information for the Nation. It was mandated by the Geologic Mapping Act of 1992 and is cooperatively built and maintained by the USGS and State Geological Surveys. We welcome you to explore the archive, view the maps, and he…
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Web standards 3 Quellen

Biology 2 Quellen

Computer science 2 Quellen

Physics 2 Quellen

Chemistry 1 Quelle

  • NIST Chemistry WebBookNachschlagewerkUS-Government-Public-Domain
    Was daraus gelesen wurde (1 von 8 Passagen)
    meritus W. Gary Mallard NIST reserves the right to charge for access to this database in the future. Search Options Jump to top of page General Searches Physical Property Based Searches Formula Name IUPAC identifier CAS registry number Reaction Author Structure Ion energetics properties Vibrational and electronic energ…

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