BARKER, D.J.P. Practical epidemiology /[by] D.J.P.Barker - 3rd ed. - Edinburgh ELBS/Churchill Livingstone 1982 - viii, 159 p. Includes reference & index. ISBN: 4430355390443020000 Subjects--Topical Terms: Epidemiology Dewey Class. No.: 614.4 / BAR