00806cam0-22003011i-450-99000019985040332120060615104928.0000019985FED01000019985(Aleph)000019985FED0100001998520020821g19219999km-y0itay50------baengGBf-------001yyContinuous wave wireless telegraphyW. H. EcclesLondonThe wireless press1921-v.ill.22 cm1.: VII, 407 p. : ill. ; 22 cmTelegrafia senza fili621.384 2Eccles,William HenryITUNINARICAUNIMARCBK99000019985040332113 L 11 045650FINBCFINBCUNINA