NASA NTRS · 19930080780
Aerial transportation
Abstract
The origin of air traffic dates from the war. The important development of aeronautic industries and the progress made in recent years, under the impelling force of circumstances, rendered it possible, after the close of hostilities, to consider the practical utilization of this new means of economic expansion.
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PIERROT. 1922-02-01. Aerial transportation. https://ntrs.nasa.gov/citations/19930080780
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