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Dewey decimal classification

Trademark.
  1. a system of classifying books and other works into ten main classes of knowledge with further subdivision in these classes by use of the numbers of a decimal system: devised by Melvil Dewey, published in 1876, and used in many libraries in the U.S. and elsewhere.


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Word History and Origins

Origin of Dewey decimal classification1

First recorded in 1880–85

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DeweyDewey Decimal System