TY  - BOOK
AU  - William A. Belson
TI  - Validity in survey research
SN  - 0-566-00510-7
U1  - 300.723 
PY  - 1985///
CY  - England
PB  - Gower Publication Co Limited
N1  - William A. Belson: Validity in survey research.  England.  Gower Publication Co Limited, 1985. 0-566-00510-7--(300.723BEL)
ER  -