The Duplex lighting system as applied to commercial requirements
Publisher: [Duplex Lighting Works of General Electric Company?]
Published: 1920
Place of publication: [New York?]
Language: eng
Number of pages: 24
Subjects: Catalogs; Electric lighting; Specifications; Incandescent lamps; Interior lighting; Duplex Lighting Work
Notes: Includes dimensions and specifications; describes installations for rooms of various sizes; illustrates installations.

"The tables used in this book are based on the results obtained in rooms, the ceilings of which were painted per samples below."--P. [3] of covers; 2 samples attached.