TY  - BOOK
AU  - Cochrane Raymond Ed
TI  - Advances in social research  :  A book of readings in research methods
T2  - Sociology & social welfare series ed by Paul Halmos
U1  - sigma:f, L3 
PY  - 1973///
CY  - London
PB  - Constable       
KW  - SOCIAL SCIENCES
ER  -