Gasoline engines.
By: Prepared in the Office of the Director of Air Service.  August, 1919.
Contributors: United States. Adjutant-General's Office. Military Information Division.
Published: 1919
Place of publication: Washington, Govt. Print. Off
Language: eng
Number of pages: 42
Subjects: Internal combustion engines; Airplanes -- Motors
Notes: On verso of t.p.: War dept. Document no. 930. Office of the Adjutant General