[THE HYGIENIC EVALUATION OF THE LIGHTING IN THE NEW COUNTRY SCHOOL BUILDINGS].
D003604:Czechoslovakia; D006801:Humans; D008027:Light; D008029:Lighting; D012423:Rural Health; D012572:School Health Services; D012574:Schools
CZECHOSLOVAKIA; LIGHTING; RURAL HEALTH; SCHOOL HEALTH
HYGIENICK'E ZHODNOTENIE OSVETLENIA NOV'YCH  SKOLSK'YCH OBJEKTOV NA VIDIEKU.