[Use of cards with double marginal perforation for the study of urological morbidity of the rural population].
D006753:Hospital Records; D006801:Humans; D011676:Punched-Card Systems; D012423:Rural Health; D012800:Siberia; D014570:Urologic Diseases / Q000453:epidemiology*
Opyt ispol'zovaniia kart s dvoĭnoĭ kraevoĭ perforatsieĭ pri izuchenii urologicheskoĭ zabolevaemosti sel'skogo naseleniia