Details of Douglas B-19 superbomber; its four Wright Duplex-Cyclone engines develop in all 8000 hp; wingspread 212 ft; weight fully loaded more than 80 tons; top speed exceeds 200 mph.
Guardian of hemisphere
Western Flying
Western Flying ; 20 , n 12
1940
4 pages
Aufsatz (Zeitschrift)
Englisch
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