TY  - BOOK
AU  - Park, J. E. & Park, K.
TI  - Park's textbook of preventive and social medicine .-12th ed .-81-900118-0-4
SN  - 81-900118-0-4
U1  - 614.44 Par/Par 
PY  - 1989///
CY  - M/s Banarsidas Bhanot, Jabalpur
ER  -