[Electric illumination in day nurseries and in nursery schools].
D004560:Electricity; D006801:Humans; D007223:Infant; D007229:Infant Welfare; D008027:Light; D008029:Lighting; D009724:Nurseries, Infant; D012578:Schools, Nursery
ILLUMINATION; INFANT WELFARE
Elektrické osvĕtlenä v jesläch a mate6rskych skolach.