The daylight efficiency of artificial illuminants

Author:	Ives, Herbert Eugene,
Year:	1911
Document Type:	USRA
Issuing Agency:	U.S. Dept. of Commerce and Labor, Bureau of Standards :
Series:	Bulletin of the Bureau of Standards ;
Report Number:	v. 6, no. 2
Subjects:	Photometry
	Lighting
Link:	https://hdl.handle.net/2027/mdp.39015086557702