[GRAPHICAL DEVICE FOR APPROXIMATE CALCULATION OF ARTIFICIAL ROOM LIGHTING].
D003604:Czechoslovakia; D004864:Equipment and Supplies; D006801:Humans; D008027:Light; D008029:Lighting; D009787:Occupational Medicine
CZECHOSLOVAKIA; EQUIPMENT AND SUPPLIES; INDUSTRIAL MEDICINE; LIGHTING
GRAFICK'A POMUCKA PRO P RIBLI ZN'Y V'YPO CET UM EL'EHO OSV ETLEN'I VNIT RN'ICH PROSTORU.