Subject descriptors are terms that are authorized for use in indexing and for information searching.
In the alphabetical display of subject terms, descriptors appear in boldface. Agricultural policy Drug laws International cooperation Standard of living Form descriptors are included in the subject descriptors. Form descriptors are terms that are used to describe the form or type of resource being indexed. Lead-in terms are not to be used in indexing. In the alphabetical display of subject terms, lead-in terms appear in regular typeface and italic.