This is a comprehensive textbook, written in English, on ECGs by Barbara J. Aehlert. It has 156 pages, is a trade paperback, and is published by Elsevier-Health Sciences Division. The book is a pocket reference, with dimensions of 7.4in. by 4.4in., and is perfect for students and professionals alike. It was published in 2009 and is categorized under Books & Magazines, Textbooks, Education & Reference, and Textbooks. The binding is in paperback and the weight is 0 lbs. This is a must-have textbook for those studying ECGs.