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Everything about Nippon Decimal Classification

System of library classification used in Japan

The Nippon Decimal Classification is a system of library classification developed for mainly Japanese-language books maintained and revised by the Japan Library Association since 1948. Originally developed in 1929 by Kiyoshi Mori, the 10th and latest edition of this system was published in 2014. The decimal notation system is similar to the Dewey Decimal System, and the order of main classes is inspired from the Cutter Expansive Classification. The system is based upon using a three digit number to classify subjects, where more digits can be added if necessary and a decimal point is used to separate the third and fourth digit. The first division level is called a class, the second level is called a division, and the third level is called a section. Each '1-9' digit is used to represent a specific category, with the digit '0' being used to represent general works. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Nippon Decimal ClassificationA 5-minute orientation
  2. Pick up a classic book: Nihon jisshin bunruihōThe most-reprinted book on the subject
  3. Read the landmark paper: An Exploratory Study of the Subject Ontogeny of Eugenics in the New Classification Scheme for Chinese Libraries and the Nippon Decimal Classification.Cited 3 times
  4. Go sideways: Korean Decimal ClassificationA closely related topic
  5. Go sideways: New Classification Scheme for Chinese LibrariesA closely related topic

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  1. Classes

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