Problem of commercial air transport is not technical development but traffic development; future of transportation of air mail and express other than first class; appropriations and work of Dept. of Commerce; operations of commercial airplanes; cost and revenue of air mail; passenger air rates. From Commerce Monthly.
Commercial aviation today
Soc. Automotive Engrs. -- Jl
Society of Automotive Engineers -- Journal ; 24 , n 1
1929
Article (Journal)
English
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Engineering Index Backfile | 1928
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