[Piezo-electric counter for registration of ballistocardiographic changes on an electrocardiograph].
D001450:Ballistocardiography / Q000295:instrumentation*; D004560:Electricity; D004562:Electrocardiography; D006801:Humans
BALLISTOCARDIOGRAPHY/apparatus and instruments
P'ezoelektricheskii datchik dlia registratsii ballistokardiogrammy na elektrokardiografe.