Cataloger's Reference Shelf LCSH - Principles of Structure and Policies for Application
24.0 Assignment of main headings
Main headings are used to bring out the major concept(s) or feature(s) of the work being cataloged.
24.1 Topical headings
24.2 Form headings
24.3 Headings for named entities
See also:
A. General Guidelines for Assigning Subject Headings