001: 23027
003: Starlibrary PMS 4.5
005: 20180430
020: ^a81-7029-104-6
066: ^aCa.I
072: ^aobjects
082: ^a005.1318
100: ^aCarl Townswnd
240: ^aINTRODUCTION TO TURBO PROLOG
245: ^aINTRODUCTION TO TURBO PROLOG
260: ^c1988
650: ^aand predicates
650: ^aprolog variables
650: ^ausing turbo prolog