TY  - GEN
AU  - Collins, Lyndhurst
TI  - The use of models in the social sciences
T2  - Social Issues in the Seventies, 4
SN  - 0422746207
U1  - 304 
PY  - 1976///
CY  - London
PB  - Tavistock
KW  - SOCIAL SCIENCE
ER  -