Aschengrau, Ann. Essentials of epidemiology in public health / Ann Aschengrau, George R. Seage III. - 2nd ed. - Sudbury, Mass. : Jones and Bartlett Publishers, c2008. - ix, 516 p. : ill., port. Includes bibliographical references and index. ISBN: 076374025X 9780763740252 Subjects--Topical Terms: Epidemiologic MethodsPublic Health National Library of Medicine Call No.: WA 950 / .A83 2008