A computer-based system to produce listings of topical subject terms and geographically subdivided terms is described. Conversion, operation, problems, and costs of the system are presented. Program and data characteristics are illustrated with record layouts and sample listings. (5 references) (Author)

Uses an experimental system for authority control on a collection of bibliographic records to demonstrate the resemblance between thesaurus-based automatic indexing and automatic authority control. Details of the automatic indexing system are given, results discussed, and the benefits of the resemblance examined. Included are a rules appendix and…

An experiment in manipulating machine-readable library records for use in subject searching indicated that such programs would be useful to extend service outside a single library location. (Author/PF)

A description is presented of the project of the University of California Library Automation Program to cumulate the 1966 through 1971 supplements to the Library of Congress Subject Headings. (4 references) (Author)

Provides statistical data from MARC-II bibliographic files to be used in the design of a nationwide authority file. The data include information on characteristics of headings and on expected sizes and growth rates of various authority file subsets. Although the data are system dependent, some general implications are derived. (RAA)

Reports a computer assisted index emphasizing expanded subject access to the reference collection of the Iowa State University Library. The index displays abbreviated length records and complements existing catalogs. Limitations of subject access and a system for assigning subject descriptors are discussed. (Author/RAA)