00845nam0-22003011i-450-99000050311040332120071008094407.0000050311FED01000050311(Aleph)000050311FED0100005031120020821d1975----km-y0itay50------baengrusa-------001yyElectron optics and electron-beam devicesA. ZhigarevMoscowMIR Publishers1975562 p.ill.22 cmOttica elettronicaFascio elettronico537.56Zhigarev,A.27018ITUNINARICAUNIMARCBK99000050311040332110 B III 22311458DINELDINELElectron optics and electron-beam devices329995UNINA