TY  - BOOK
AU  - Ratan, Vidya.
TI  - Viva in preventive and Social Medicine : Hygience and public health (4th Ed
U1  - 614.44 RAT 
PY  - 2005///
CY  - New Delhi 
PB  -  Jaypee Brothers 
KW  - community medicine
KW  - departmental books
ER  -