TY  - BOOK
AU  - DAS (D K Lal)
TI  - Designs of social research
SN  - 8170339847
U1  - 300.72 DASD 
PY  - 2011///
CY  - Jaipur
PB  - Rawat Publications
KW  - social
KW  - research
KW  - of
KW  - Designs
ER  -