New Riders' Official Internet Yellow Pages

Abstract

Form subdivision may be defined as the extension of a subject heading based on the form or arrangement of the subject matter in the book. In other words, it repre sents what the book is, rather than what it is about, the subject matter being expressed by the main heading.1 David Judson Haykin, Subject Headings: A Practical Guide (Washington, D.C.: GPO, 1951).¹