TY  - BOOK
AU  - Ahlbom, Anders
AU  - Norell, Staffan
TI  - Introduction to modern epidemiology
SN  - 0-917227-
U1  - Res 614.4 Ah47 1984 
PY  - 1984///
CY  - Chestnut Hill
PB  - Epidemiology Resources
KW  - Epidemiology
N1  - includes index
ER  -