Riseman, Joseph E. F. 1903- P-Q-R-S-T, a guide to the interpretation of electrocardiograms [by] Joseph E.F. Riseman ... - [Boston, 1944] - 1 p. l., 28 p. diagrs. 15 x 21 cm. "First edition." LCCN: sg 44000230 Subjects--Topical Terms: Electrocardiography. LC Class. No.: RC683 / .R5 Dewey Class. No.: 616.0751