Standard specifications for large incandescent electric lamps. <Tungsten and carbon>
Edition: <9th ed., July 30, 1921> <Superseding 8th ed., issued Apr. 13, 1918> ...
Series: Circular of the Bureau of standards -- no. 13
Publisher: Govt. print. off.
Published: 1921
Place of publication: Washington
Language: eng
Number of pages: 20
Subjects: Incandescent lamps
Notes: S.W. Stratton, director.

Running title: Specifications for large incandescent electric lamps.