00482nam a2200181Ia 4500 CTU_7581 210402s9999 xx 000 0 und d 616.1207547 D814 Dale Dubin Rapid interpretation of EKG's Dale Dubin Frolida Cover 1974 electrocardiography Nguyễn Huỳnh Mai, 960823 Trung tâm Học liệu Trường Đại học Cần Thơ