Unesco thesaurus a structured list of descriptors for indexing and retrieving literature in the fields of eduction, science, social science, culture and communication - United Nations Educational, Scientific and Cultural Organization; Aitchison, Hean. (Paris Unesco, 1977)
v. 1. Introduction, classified thesaurus, permuted index, heirarchical display.--v. 2. Alphabetical thesaurus.
Keywords: Subject headings