Thaler, Malcolm S. The only EKG book you'll ever need / Malcolm S. Thaler - 4th ed. - Philadelphia : Lippincott Williams & Wilkins, 2003 - xii, 318 p. : ill. (some col.) ; 24 cm. ISBN: 0781741769 (pbk.) RM160.60 Subjects--Topical Terms: ElectrocardiographyHeart diseases--Diagnosis National Library of Medicine Call No.: WG140