General discussion of air-mail service and air-mail lines in Europe, Asia and Africa; comparative study of cost and speed of aerial and other methods of mail transportation; statistics of air-mail transportation by notable European air-mail lines during summer of 1927; detailed discussion of Berlin-Moscow air mail.
Air mail and aerial transportation
Luftpost und Luftverkehr
1928
18 pages
4 Figs.
Article (Journal)
German
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