TY  - BOOK
AU  - Rothman,Kenneth J.
TI  - Epidemiology: an introduction 
SN  - 0195135547
AV  - RA651 .R68 2002
U1  - 614.4 
PY  - 2002///
CY  - New York, N.Y.
PB  - Oxford University Press
KW  - Epidemiology
KW  - Epidemiologic
KW  - Methods
N1  - Public Health
UR  - https://opac.northsouth.edu/cgi-bin/koha/opac-retrieve-file.pl?id=49ff4d150d9c5ce08145d369a05f5279
ER  -