TY  - BOOK
AU  - Merrill, Ray M.
TI  - Environmental epidemiology: principles and methods
SN  -  978-93-80108-10-0
U1  - 614.4 
PY  - 2010///
CY  - New Delhi
PB  - Jones and Bartleft
KW  - EPIDEMIOLOGIC METHODS
KW  - EPIDEMIOLOGY
ER  -