TY  - BOOK
AU  - Aitchison,Jean
AU  - Viet,Jean,tr
ED  - UNESCO. Computerized Documentation System
TI  - UNESCO thesaurus: a structure list of descriptors for indexing and retrieving literature in the fields of education, science, social science, culture and communication; Volume 1, introduction, classified thesaurus permuted index, hierarchical display 
SN  - 9231014692
PY  - 1977///
CY  - Paris
PB  - UNESCO
ER  -