TY  - BOOK
AU  - Singh, S.P.  .
TI  - Research methods in social sciences: a mannual for designing questionnaires / 
SN  - 81-7391-483-4
U1  - MZ:f 
PY  - 2002///
CY  - New Delhi : 
PB  - Kanishka Publication, Distributors , 
KW  - Social science
ER  -