title: [Psychohygienic evaluation of mental activity of younger schoolchildren in their studies of Russian literature].
mesh_terms: D002648:Child; D006801:Humans; D007858:Learning / Q000502:physiology*; D008091:Literature; D008603:Mental Health; D012572:School Health Services; D013647:Task Performance and Analysis; D014586:USSR; D014938:Work Capacity Evaluation
vernacular_title: Psikhogigienicheskaia otsenka umstvennoĭ raboty mladshikh shkol'nikov pri osvoenii russkoĭ literatury.