000 00454 a2200181 4500
020 _a9780763766221
082 _a614.4
_bMER
090 _c27441
_d47496
100 _aMerrill, Ray M.
245 _aIntroduction to epidemiology
250 _a5th ed.
260 _aBoston
_bJones and bartlett publishers
_c2010
_g2010
300 _axix,417p.
_bill
_c25cm
650 _aMedicine
650 _aepidemiology
650 _aPreventive medicine
942 _cSR
999 _c54165
_d54165