TY  - BOOK
AU  - Roy,R.N.
AU  - Saha,I
TI  - Mahajan & Gupta Textbook of Preventive and Social Medicine
SN  - 8180610705
U1  - 610.7343 
PY  - 2013///
CY  - New Delhi
PB  - Jaypee Pub
ER  -