00515cam a22001574a 4500 0 0 0 0 fsd fsd 2025-12-23 Purchased: 0 616.12 AEH 113115 2025-12-23 00:00:00 1 2025-12-23 BK 59875 59875 9788131235072 (pbk) 616.12 AEH Aehlert, Barbara. Pocket Reference for ECGs made easy St. Louis, Mo. Elsevier 2013 vii, 123 p. : ill. (col.) ; 18.5 cm. Includes index. Medical science Heart diseases Arrial arrhythmia Sinus mechanisms Pacemaker rhythms ECGs Arrhythmia RIPS BK