Dubin, Dale, 1940- Rapid interpretation of EKG's: a programmed course. - 5th ed. - [Tampa, Fla., Cover Pub. Co., 1996. - 342 p. illus. 26 cm. Subjects--Topical Terms: Electrocardiography--Programmed instruction. LC Class. No.: RC 683.5 / .D83 1996