TY  - BOOK
AU  - Hakim, Catherine
AU  - Bulmer, Martin
TI  - Secondary analysis in social research: A guide to data sources and methods with examples 
SN  - 0-04-312015-6
U1  - 300.72 
PY  - 1982///
CY  - London
PB  - George Allen & Unwin
N1  - Contemporary Social Research : 5
ER  -