@book{33855,
	author = {Conover, Mary Boudreau, and Zalis, Edwin G.},
	title = {Understanding electrocardiography :},
	publisher = {Mosby,},
	year = {1976.},
	address = {Saint Louis :},
	edition = {2nd ed.},
	note = {Previous edition entered under Zalis, Edwin G.}
}