О553 | W33 | Watts, Henry The design of screw propellers for aircraft [Текст] = Конструирование воздушных винтов для самолетов / M.B.E., B.Sc., fellow of the Royal Aeronautical Society late Air Ministry. — London : Longmans, Green and Co, 1920. — 340 p. : with illustrations and diagrams. |
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