00879nam0-22003011i-450-99000050525040332120101214125736.0000050525FED01000050525(Aleph)000050525FED0100005052520020821d1966----km-y0itay50------baengy-------001yyIonospheric radio propagationKenneth DaviesNew YorkDover publications1966470 p.ill. 22 cmDover books on engineering and engineering physicsPropagazione onde radio ionosferiche621.384'11Davies,Kenneth27124ITUNINARICAUNIMARCBK99000050525040332110 E III 636278DINELDINELIonospheric radio propagation330089UNINA