TY  - BOOK
AU  - Aitchison, Jean
AU  - Gilchrist, Alan
TI  - Thesaurus construction and use : a practical manual
SN  - 9780851424460
SN  - 73159779
U1  - 025.49 AIT 
PY  - 1972///
CY  - London
PB  - Aslib
KW  - Subject headings
N1  - Bibliography: p. 88-90
ER  -