Potentialities of helicopter for scheduled airline operation with particular reference to London-Paris route; economic problems that face helicopter as it is today and as it will be in future. Before Helicopter Assn Great Britain. (See also Aeroplane v 77 n 2002 Oct 21 1949 p 563-6)
Economics of helicopter
Flight
Flight ; 56 , n 2128
1949
2 pages
Article (Journal)
English
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