TY  - BOOK
AU  - Aitchison,Jean
AU  - Gilchrist,Alan
TI  - Thesaurus construction: a practical manual 
SN  - 0851421970
AV  - Z 695 .A47 1987
U1  - 025.4/9 19
PY  - 1987///
CY  - London
PB  - Aslib
KW  - Subject headings
N1  - Previous ed.: 1972; Bibliography: p156-164. - Includes index
ER  -