Beasley, Brenda M. Understanding EKGs : a practical approach / Brenda M. Beasley - New Jersey : Prentice Hall , 1999 - xi 192p. : ill. ; 28 cm ISBN: 0835985717 RM120.60 LCCN: 99-14784 Subjects--Topical Terms: Electrocardiography National Library of Medicine Call No.: WG140