[CARDIOLOGIC DOCUMENTATION BY MEANS OF EDGE-PUNCHED CARDS].
D002309:Cardiology; D004282:Documentation; D006801:Humans; D008499:Medical Records; D011642:Publications; D011676:Punched-Card Systems
CARDIOLOGY; MEDICAL RECORDS; PUNCHED-CARD SYSTEMS
KARDIOLOGISCHE DOKUMENTATION MITTELS RANDLOCHKARTEN.