TY  - BOOK
AU  - Chattopadhyay, Krishnadas.
TI  - Samajik gobeshana : paddhati o pakriya / 
U1  - 001.42 
PY  - 2012///
CY  - Kolkata : 
PB  - Arambag Book House , 
KW  - RESEARCH METHODS
ER  -