Friedman, Gary D. Primer of epidemiology / Gary D. Friedman - 5th ed. - Boston : McGraw-Hill, c2004. - x, 401 p. : ill. ; 22 cm. ISBN: 0071236902 LCCN: Subjects--Topical Terms: EpidemiologyEpidemiology LC Class. No.: RA651 / .F68 2004 Dewey Class. No.: 614.4 / F911p