TY  - BOOK
AU  - Howard,Joanna
ED  - Heinemann Educational Books
TI  - Preventive medicine
T2  - Heinemann science and technical readers
SN  - 043529945X
U1  - 614.44 23
PY  - 1981///].
CY  - London: 
PB  - Heinemann Educational Books, 
KW  - Preventive medicine
ER  -