Airplane production has more than doubled in past year and at that manufacturers cannot begin to supply increasing demand for modern planes; direct air service, combined air-rail passenger services, and scenic air tours in United States are discussed; reducing air-mail rate has proved that air mail has confidence of American business man and that economic foundation of private contract system is sound.
Aviation progress
Aero Digest
Aero Digest ; 13 , n 3
1928
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1930
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