TY  - BOOK
AU  - Levy,Marvin R
AU  - Dignan,Mark
AU  - Shirreffs,Janet H.
TI  - Essentials of life and health
SN  - 0394332628
U1  - 613 
PY  - 1984///
CY  - New York
PB  - Random House
KW  - Salud pública
ER  -