Details the characteristics of authority records in the machine readable Library of Congress Subject Headings. Statistics are given on occurrences of variable length fields and the length and maximum length of such fields in subject heading records. The usefulness of these statistics for system design is discussed. (five references) (CLB)

Introduces and briefly describes modifications to the Library of Congress cataloging rules, to be implemented January 1, 1994, which will allow catalogers to describe multiple formats in a single bibliographic record using both fixed and variable field data. (NRP)

Argues that online search capabilities are a form of indexing and that access is determined by the total mix of preexisting and added "search capability" indexing. The design of a "superthesaurus," geared to the needs of users and to online rather than manual searching, is proposed as part of a user friendly interface. (19…

This report provides the specifications for a bibliographic format which is a detailed and structured method for recording a number of mandatory and optional data elements in a computer-readable bibliographic record for exchange purposes between two or more computer-based systems. The specifications are designed to permit local designers to devise…

Describes the implementation of a new set of indexes in the NOTIS/LUIS system that provide author, title, and subject access to bibliographic and authority records in the NOTIS/MARC format. The discussion covers index record structure and content, the design philosophy and process, and functions supported by the system. (Author/CLB)