TY  - BOOK
AU  - Bonita, R.
AU  - Kjellstrlm, T.
AU  - World Health Organization
TI  - Basic epidemiology
U1  - 614.4 
PY  - 2006///
CY  - Geneva
PB  - World Health Organization
KW  - Public Health
KW  - Epidemiology
ER  -