...The airplane propeller United States Army. Air Corps. creator United States Adjutant-General's Office. text dcu Washington Govt. print. off. 1921 monographic eng
print
337 p. incl. illus., tables, fold. pl., diagrs (part fold) ; 23 cm. Prepared by the Propeller section, Engineering division, McCook Field, Dayton, Ohio. January, 1920. On verso of t.p.: War department. Document no. 998. Office of the adjutant general. Propellers, Aerial TL705 .U5 1920 war21000068 DLC 831021 20260227112812.0 war21000068