Barker, D. J. P. Epidemiology in medical practice / D. J. P. Barker, C. Cooper and G. Rose: - 4th ed. - Edinburgh: Churchill Livingstone , 1990. - viii,163 p.: ill. ; 22 cm. Includes index. ISBN: 0443037833 Subjects--Topical Terms: Epidemiology. National Library of Medicine Call No.: WA 105 / B241e 1990