TY  - BOOK
AU  - Kessler, Irving. I.
AU  - Levin, Morton. L.
TI  - The community as an epidemiologic laboratory: a casebook of community studies
SN  - 801811198
AV  - MED RA445 C645
PY  - 1970///
CY  - Newyork.
PB  - Johns Hopkins University Press.
ER  -