The UNESCO Thesaurus is a controlled and structured list of terms used in subject analysis and retrieval of documents and publications in the fields of education, culture, natural sciences, social and human sciences, communication and information. Continuously enriched and updated, its multidisciplinary terminology reflects the evolution of the Organization's programs and activities.
The UNESCO Thesaurus contains 7,000 terms in English and in Russian, 8,600 terms in French and in Spanish.
The UNESCO Thesaurus is also available on CD-ROM,
Comment: A thesaurus, such as the UNESCO Thesaurus, is required for the definition of key words to describe documents in a library of data base. It imposes a hierarchical structure on fields of knowledge. Colleagues who know about such things tell me that the UNESCO Thesaurus is the gold standard in the fields it covers, and is used all over the world. JAD