Describes the Dewey Online Retrieval System (DORS), which was developed at the University of California, Los Angeles (UCLA), to experiment with classification-based search strategies in online catalogs. Classification structures in automated information retrieval are discussed; and specifications for a classification retrieval interface are…

Describes the elements of a selection decision model, and develops an outline for classification of library materials by source of origin. Descriptions of short- and long-term goals for collection development are included, as well as an outline of macro- and microselection decision making. (Author/MBR)