Hampton, John R. David Adlam creator text New york Elsevier 2008 monographic xi, 341 p. : ill. (col.) ; 18.5 cm. Include index. Electrocardiography Cardiac Arrhythmias Electrocardiogram (ECG) Cardiac rhythm X-ray Learning PR interva RIPS 616.12 HAM 9780443068249 (pbk)