Nippon Decimal Classification

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The Nippon Decimal Classification  (NDC, also called the Nippon Decimal System) is a system of <a href="/facts/Library_classification/7saMUXAH">library classification</a> developed for mainly Japanese-language books maintained and revised by the <a href="/facts/Japan_Library_Association/UY4w6T0E">Japan Library Association</a> 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 <a href="/facts/Dewey_Decimal_Classification/BsT2QEP2">Dewey Decimal System</a>, and the order of main classes is inspired from the <a href="/facts/Cutter_Expansive_Classification/dNGsQwlH">Cutter Expansive Classification</a>. 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.
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Nippon Decimal Classification open-in-new

Nippon Decimal Classification