[Punched cards with edge perforation for the individual bibliographic card index and in the work of the school sanitation section of a sanitary--epidemiological station].
D002675:Child, Preschool; D006801:Humans; D007256:Information Systems; D011676:Punched-Card Systems; D012572:School Health Services; D014586:USSR
Perfokarty s kraevoĭ perforatsieĭ dlia individual'noĭ bibliograficheskoĭ kartoteki i v rabote shkol'no-sanitarnogo otdela sanépidstantsii