00866nam0-22002651i-450-99000399247040332120040121105324.0000399247FED01000399247(Aleph)000399247FED0100039924720040109d--------km-y0itay50------baengBritish special quality valves and electron tube devices data annual 1964-1965Dummer G.W.A. , Mackenzie Robertson J.OxfordPergamon press ltd.1964elettromagnetismoDummer,G.W.A.46431Robertson,J. Mackenzie25376ITUNINARICAUNIMARCBK99000399247040332100 L14802710DETECDETECBritish special quality valves and electron tube devices data annual 1964-1965474450UNINA