TY  - BOOK
AU  - Sapsford, Roger [Ed.]
AU  - Jupp, Victor [Ed.]
TI  - Data collection and analysis
SN  - 0 7619 5046 X
U1  - 001.433 
PY  - 1996///
CY  - London
PB  - Sage Publications 
KW  - Social Sciences -- Statistical Methods
KW  - Social Sciences -- Research
ER  -