[A DEVICE FOR THE PRECISE RECORDING OF PRECORDIAL AREAS].
D004562:Electrocardiography; D004864:Equipment and Supplies; D006801:Humans; D010701:Phonocardiography
ELECTROCARDIOGRAPHY; EQUIPMENT AND SUPPLIES; PHONOCARDIOGRAPHY
PRISPOSOBLENIE DLIA TOCHNO I RAZMETKI PREKORDIAL'NYKH TOCHEK ISSLEDOVANIIA.