Friis, Robert H. Epidemiology for public health practice / by Robert H. Friis and Thomas A Sellers. - 4th ed / . - London : Jones & Bartlett , 2008. - 717p. : figures ; 23cm . Includes index ISBN: 9780763751616 USD46.00 Subjects--Index Terms: EPIDEMIOLOGY Dewey Class. No.: 614.4 / ERI/E