Mechanical and technical training for conscripted men (Air division, U. S. signal corps)
Mechanical and technical training for conscripted men (Air division, U. S. signal corps)
- Washington, Govt. print. off., 1918.
- 47 p. 23 cm.
e 18000137
Technical education--United States.
LC1045 / .A25 no. 4
e 18000137
Technical education--United States.
LC1045 / .A25 no. 4