TY  - BOOK
AU  - Roy, Rabindra Nath
TI  - Text book of Preventive and Social Medicine (4th Ed)
SN  - 9789350901878
U1  - 616.9045  
PY  - 2013///
CY  - New Delhi
PB  - Jaypee Brothers 
KW  - Management Books
ER  -