TY  - BOOK
AU  - Boyd, M. F.
TI  - Preventive medicine
U1  - 614.44 
PY  - 1946///
CY  - Philadelphia
PB  - W. B. Saunders Company
KW  - Bacteriology
KW  - Public health -- Epidemiology
N1  - Reference - Training (Para Medicals - India)
ER  -