ANALOG COMPUTERS IN PRECORDIAL PULSE STUDIES.
D003201:Computers; D003202:Computers, Analog; D004285:Dogs; D004562:Electrocardiography; D001330:Electronic Data Processing; D006339:Heart Rate; D010701:Phonocardiography; D012106:Research
AUTOMATIC DATA PROCESSING; COMPUTERS; DOGS; ELECTROCARDIOGRAPHY; EXPERIMENTAL LAB STUDY; PHONOCARDIOGRAPHY