TY  - BOOK
AU  - Summerall,Charles P.
TI  - Lessons in ECG interpretation : : a basic self-instructional guide / 
SN  - 0443087784
PY  - 1991///
CY  - New York : 
PB  - Churchill Livingstone , 
KW  - Electrocardiography
KW  - programmed instruction
KW  - Heart Diseases
KW  - diagnosis
KW  -  programmed instruction
N1  -  Includes index
ER  -