Cataloging: Fundamentals of the NLM® Classification
Module 1—Overview of NLM Classification
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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
Structure of NLM Classification
Schedules—Overview
- Schedules are topical groupings of classification numbers
- The NLM Classification includes schedules permanently excluded from Library of Congress Classification (LCC): QS-QZ; W-WZ
- NLM class numbers are alphanumeric notations patterned after LCC
- Unlike LCC, NLM class numbers are formatted with a space between the alpha and numerical call number. Exception: If the class number consists of a single letter and a single digit, it is entered without any space (e.g., W1, W2, W3, etc.)
Schedules—Organization
There are 36 schedules which denote broad subject categories:
- Preclinical Sciences (QS-QZ)
- General Health and Medicine (W-WB)
- Diseases of the Whole Body; Aviation, Space, Naval Medicine (WC-WD)
- Body Systems (WE-WL)
- Specialty Areas (WM-WY)
- History (WZ; 19th Century)
