Thesaurus of ASTIA Descriptors

"The Thesaurus is divided into three major sections: the Schedule of Descriptors, the Scope Note Index, and the charts of Generic Relationships. The Schedule of Descriptors comprises (1) an alphabetical list of Descriptor Fields covering the ASTIA (AD) collection in terms of subject matter disciplines; (2) the Descriptor Fields divided into distinct Descriptor Groups indicating the extent of each Descriptor Field; and (3) an alphabetical-numerical list of these Descriptor Groups, displaying the individual Descriptors within each group."