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单词 dewey decimal system
释义

Collins Concise English Dictionary © HarperCollins Publishers::
Dewey Decimal System /ˈdjuːɪ/ n
  1. a frequently used system of library book classification and arrangement with ten main subject classes
    Also called: decimal classification
Etymology: 19th Century: named after Melvil Dewey (1851–1931), US educator who invented the system
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