00828nam0-22002891i-450-990000050910403321000005091FED01000005091(Aleph)000005091FED0100000509120011111d--------km-y0itay50------baitay-------001yyRadio navigation for pilotsColin H. McIntosh.New York-LondonMcGraw-Hill book company1943IX, 171 p.ill., 2 tav. f.t.21 cmRadionavigazione aerea629.132 51McIntosh,Colin Hugh331955ITUNINARICAUNIMARCBK99000005091040332113 F 01 1920281FINBCFINBCRadio navigation for pilots112144UNINAING01