[Experience in the use of punched cards to study the volume and quality of first aid and emergency medical service in rural regions].
D004632:Emergency Medical Services; D005392:First Aid; D011676:Punched-Card Systems; D012423:Rural Health; D013222:State Medicine; D014586:USSR
Opyt primeneniia karty s kraevoĭ perforatsieĭ pri izuchenii ob''ema i kachestva skoroĭ i neotlozhnoĭ meditsiskoĭ pomoshchi v sel'skom raĭone.