United States government specifications for large tungsten filament incandescent electric lamps.
Edition: 10th ed.
Series: Circular of the Bureau of Standards -- no. 13 (1923)
Publisher: Government Printing Office
Published: 1923
Place of publication: Washington
Language: eng
Number of pages: 16
Subjects: Incandescent lamps.
Notes: "Issued February 7, 1923."

At head of title: Department of Commerce, Bureau of Standards.