000 00343pam a2200145 i 4500
020 _a007022434
050 0 0 _aMED RA651
_bF68
100 1 _aFriedman, Gary D.,
245 1 0 _aPrimer of epidemiology /
250 _a2d ed.
260 _aNew York :
_bMcGraw-Hill,
_c1980.
300 _axii, 288 p.
_bill.
650 0 _aEpidemiology.
942 _cBK
999 _c5836
_d5836