Merrill, Ray M. Introduction to epidemiology - 6th ed. - xviii, 434 p. Includes bibliographical references and index. ISBN: 9781449645175 9781449665487 LCCN: 2012012911 Subjects--Topical Terms: Epidemiology.Epidemiologic MethodsEpidemiologyEpidemiology Dewey Class. No.: 614.4 MER