TY  - BOOK
AU  - Bhatnagar, O. P.
TI  - RESEARCH METHODS AND MEASUREMENTS IN BEHAVIOURAL SCIENCES
U1  - 300.072 
PY  - 1981///
CY  - New Delhi
PB  - Agricole
KW  - Social Science Research
N1  - Bibliography : P. 237-238
ER  -