TY  - BOOK
AU  - Bulmer,Martin
TI  - Sociological research methods: an introduction 
SN  - 0333212525 :
U1  - 300.7 BUL 
PY  - 1977///
CY  - London
PB  - Macmillan
KW  - Sociology
KW  - Social surveys
N1  - Bibliography: p. [338]-363
ER  -