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Cataloging and Metadata Management: Fundamentals of the NLM® Classification

Fundamentals of the NLM® Classification_index

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Classifying Pre-20th Century Works

  • At NLM, works published prior to 1914 are classed either in the WZ schedule or in the 19th Century Schedule
  • The rules for classifying pre-20th century works also apply to reprints and facsimiles of these works
    • These rules do not apply to new editions of early printed works which are classed in the main schedules by topic


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