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  2. List of Dewey Decimal classes - Wikipedia

    en.wikipedia.org/wiki/List_of_Dewey_Decimal_classes

    List of Dewey Decimal classes. The Dewey Decimal Classification (DDC) is structured around ten main classes covering the entire world of knowledge; each main class is further structured into ten hierarchical divisions, each having ten divisions of increasing specificity. [1] As a system of library classification the DDC is "arranged by ...

  3. Dewey Decimal Classification - Wikipedia

    en.wikipedia.org/wiki/Dewey_Decimal_Classification

    A library bookshelf in Hong Kong classified using the New Classification Scheme for Chinese Libraries, an adaptation of the Dewey Classification scheme. The Dewey Decimal Classification (DDC), colloquially known as the Dewey Decimal System, is a proprietary library classification system which allows new books to be added to a library in their appropriate location based on subject.

  4. Library of Congress Classification - Wikipedia

    en.wikipedia.org/wiki/Library_of_Congress...

    The call number for Glaciers and Glaciation (2nd edt.) by Benn & Evans. This indicates that it belongs to the broad class of "Geography, Anthropology, Recreation," the subclass of "Physical Geography," and the topic of "Ice. Glaciers. Ice sheets. Sea ice." B44 is the Cutter number, after the first author Benn, and 2010 represents the ...

  5. Biogeography - Wikipedia

    en.wikipedia.org/wiki/Biogeography

    Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area. [1] Phytogeography is the branch of biogeography that studies the ...

  6. Glossary of geography terms (A–M) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_geography_terms...

    This glossary of geography terms is a list of definitions of terms and concepts used in geography and related fields, including Earth science, oceanography, cartography, and human geography, as well as those describing spatial dimension, topographical features, natural resources, and the collection, analysis, and visualization of geographic data.

  7. 800 (number) - Wikipedia

    en.wikipedia.org/wiki/800_(number)

    800 (eight hundred) is the natural number following 799 and preceding 801. It is the sum of four consecutive primes (193 + 197 + 199 + 211). It is a Harshad number ...

  8. Almagest - Wikipedia

    en.wikipedia.org/wiki/Almagest

    The Almagest (/ ˈælmədʒɛst / AL-mə-jest) is a 2nd-century mathematical and astronomical treatise on the apparent motions of the stars and planetary paths, written by Claudius Ptolemy (c. AD 100 – c. 170) in Koine Greek. [1] One of the most influential scientific texts in history, it canonized a geocentric model of the Universe that was ...

  9. Geobiology - Wikipedia

    en.wikipedia.org/wiki/Geobiology

    Geobiology employs molecular biology, environmental microbiology, organic geochemistry, and the geologic record to investigate the evolutionary interconnectedness of life and Earth. It attempts to understand how the Earth has changed since the origin of life and what it might have been like along the way.