Wednesday, May 08, 2002

Another Controlled Vocabulary

The NASA Thesaurus is available in PDF format online. This is a huge document, over 1200 pages, so do not try this with a dial up connection. The whole print document is available including the introductory text.

Recently on AUTOCAT someone asked the question "what to read in the area of subject headings and classification?" I do believe that the introduction of several thesaurus and subject heading lists would be a valuable part of that reading list. They provide concrete examples of how and why the list was constructed. The AAT and DDC have perhaps the best introductions but the others give the reader some contrast and renforcement of principles.