TY  - BOOK
AU  - Merrill, Ray M.
AU  - Timmreck, Thomas C.
TI  - Introduction to epidemiology
SN  - 763735825
U1  - 614.4 
PY  - 2006///
CY  - Boston
PB  - Jones and Bartlett Publications
KW  - Epidemiology
ER  -