TY  - BOOK
TI  - UNESCO thesaurus: : A structured list of descriptors for indexing and retrieving literature in the fields of education, science, social science, culture and communication
SN  - 9231014692
PY  - 1977///
CY  - Paris: 
PB  - UNESCO, 
KW  - Library science
N1  - Vol. 1  (Introduction classified thesaurus permuted index hierarchical display); ISBN: 9231014692; xvii, 485p.
Vol. 2 (Alphabetical thesaurus); ISBN: 9231014692; 530p
ER  -