TY  - BOOK
AU  - Ratan, V
AU  - Ratan, V
TI  - Handbook of Preventive and Social Medicine (Community Medicine)
SN  - 8171793800
AV  - 614.44 
U1  - 614.44 
PY  - 2002///
CY  - Jaypee
KW  - PREVENTIVE MEDICINE
ER  -