000 00392nam a22001337a 4500
020 _a801811198
050 _aMED RA445
_bC645
245 _aThe community as an epidemiologic laboratory: a casebook of community studies
260 _aNewyork.
_bJohns Hopkins University Press.
_c1970
300 _aviii,325pg.
_bill.
700 _aKessler, Irving. I.
700 _aLevin, Morton. L.
942 _cBK
999 _c8896
_d8896