UNESCO thesaurus :
Aitchison, Jean
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 / byJean Aitchison; tr. Jean Viet. - Paris : UNESCO, 1977. - xvii, 485 p.
9231014692
OC 025.343 (100) =20 AIT Vol.1
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 / byJean Aitchison; tr. Jean Viet. - Paris : UNESCO, 1977. - xvii, 485 p.
9231014692
OC 025.343 (100) =20 AIT Vol.1