Investigation on the Lighting Conditions in Schoolroom

Takeo Yamamoto, Konosuke Nishida, Takakazu Nakamura, Wasako Banno, Sekio Ueno
1962 Nippon Eiseigaku Zasshi (Japanese Journal of Hygiene)  
doi:10.1265/jjh.17.214 fatcat:matau7xejfctzdcefx45zjrt24