Cataloging: Fundamentals of the NLM® Classification
Module 6—Form Numbers
page 4 of 6
Introduction
Module 1
Overview of NLM Classification
Module 2
Using the Online NLM Classification
Module 3
Components of NLM Call Numbers
Module 4
General Principles
Module 5
Table G
Module 6
Form Numbers
Module 7
Bibliographies and Related Materials
Module 8
Classification of 19th Century Works and Early Printed Books
Module 9
Continuing Resources
Special Cases—History
- In general, form number 11 is used for works dealing with the history of any aspect of a subject within a classification schedule
- For example, WM 11 is used for both Psychiatry $x history and Psychotherapy $x history
Exceptions (noted in the schedule)
- History of a drug is classed with the drug (not in QV 11)
- W 11 and WB 11 are not used. Use instead the appropriate number in WZ schedule
- In rare exceptions when there is no appropriate WZ number, the history of a topic is classed in the same number used for works on current practice in the W schedule
- WB 900-962 are used for the history of complementary therapies
- History of a single infectious disease is classed with the infectious disease (not in WC 11)
- History of a society is classed in form number 1 in an NLM schedule where applicable
- Histories of schools, laboratories, hospitals, institutes, etc. are classed in the appropriate form number for the type of entity
- For example, history of a medical school is classed in W 19 while history of a laboratory is classed in QY 24
