[HYGIENIC PROBLEMS IN THE VENTILATION AND HEATING OF SCHOOL BUILDINGS].
D006361:Heating; D006801:Humans; D012119:Respiration; D012574:Schools; D014586:USSR; D014691:Ventilation
HEATING; SCHOOLS; USSR; VENTILATION
NEKOTORYE GIGIENICHESKIE VOPROSY VENTILIATSII I OTOPLENIIA SHKOL'NYKH ZDANI I.