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Cataloging: Fundamentals of the NLM® Classification

Module 6—Form Numbers

page 3 of 6


Special Cases—Popular Works

  • Some, but not all of the schedules have a form number for Popular Works
  • When using Popular Works, check if there is a specific number available in the schedule
    • Examples:
      • WG 113 (Heart Diseases)
      • WQ 150 (Pregnancy)
      • QZ 201 (Neoplasms)

Special Cases—Collected Works

  • Collected works, and works comprised of addresses, essays, and lectures are classed in their respective form numbers when the works cover the overall subject of the schedule
    • For example, Psychiatry $v Collected Works is classed in WM 5 or WM 7
    • However, Psychotherapy $v Collected Works is classed in WM 420

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