TY  - BOOK
AU  - Clark,Duncan W.
AU  - MacMahon,Brian
TI  - Preventive and community medicine
SN  - 0316145963
AV  - MED RA425 .P727 
PY  - 1981///
CY  - Boston
PB  - Little, Brown
KW  - Medicine, Preventive
KW  - Community health services
N1  - Rev. ed. of: Preventive medicine
ER  -