TY  - BOOK
AU  - Kelsey,Jennifer L.
AU  - Thompson,W.Douglas
AU  - Evans,Alfred S.
TI  - Methods in observational epidemiology
SN  - 0195036573
PY  - 1986///
CY  - New York, N.Y.
PB  - Oxford University Press
KW  - Epidemiology
KW  - Research
KW  - Methodology
KW  - Statistical methods
N1  - Includes bibliographies and index
ER  -