Railroads of United States losing passenger traffic, Class 1 losing between 25 and 30 per cent in eight years; comparison of distances, fares, and schedules; in its initial operations, airplane will carry practically twice as many passengers per crew employee as do steam roads. From Airway Age, Dec. 1928.
Air and rail traffic comparisons
Soc. Automotive Engrs. -- Jl
Society of Automotive Engineers -- Journal ; 24 , n 4 ; p 424
1929
Aufsatz (Zeitschrift)
Englisch
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Air and rail traffic comparisons
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