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UNESCO thesaurus : a structured list of descriptors for indexing and retrieving literature in the fields of education, science, social science, culture and communication / comp. by Jean Aitchison. - Paris : UNESCO, 1977. - 2 v.

Monografía

ISBN: 9231041692

Subjects--Index Terms: Encabezamientos de Materia

LC Class. No.: C/Z695/U53