Thaler, Malcolm S. The only EKG book you'll ever need / Malcolm S. Thaler. - 2nd ed. - Philadelphia : J.B.Lippincott , 1995. - xvii,293 p. : ill. ; 23 cm. Includes index. ISBN: 0397514085 Subjects--Topical Terms: Electrocardiography. National Library of Medicine Call No.: WG140 / T327 1995