The relation of the horsepower to the kilowatt.
Subtitle: Issued June 1, 1912.
Edition: <1st ed.>.
Series: Circular -- no. 34
Publisher: Govt. print. off.
Published: 1912
Place of publication: Washington
Language: eng
Number of pages: 12
Subjects: Electric units; Horsepower
Notes: S. W. Stratton, director.

At head of title: Department of commerce and labor.