TY  - BOOK
AU  - Bulmer Martin
TI  - Social science and social policy
SN  - 0043120253
U1  - Sigma:f, M6 
PY  - 1986///
CY  - London
PB  - Allen & Unwin Gt. Brit.    
KW  -  RESEARCH METHODS
KW  - SOCIAL SCIENCES
ER  -