00549nam a2200169Ia 450000500170000000800410001703500090005804100080006708200110007510000170008624500510010325000080015426000580016230000140022050500910023465000540032520260808125309.0260808s9999||||xx |||||||||||||| ||und||  a1262  aENG  a614.44  aMaxcy, K. F. 0aPreventive medicine and public healthbRosenau  a8th  aNew YorkbAppleton Century Crofts Incorporationc1956  axv + 1465  aPreventive medicine, Public health, Epidemiology, Disease prevention, Community health  aHealth and HygienebPublic health -- Epidemiology