01068nam a2200289 i 450099100091022970753620020507103112.0951204s1970 us ||| | eng b10146933-39ule_instLE00638996ExLDip.to Fisicaita53.2.82537.5'6QC447El-Kareh, J.C.J.461782Electron beams, lenses, and optics /J.C.J. El-Kareh, A.B. El-KarehNew York :Academic Press, Inc.,19702 v. :ill. ;24 cm.Electron opticsEl-Kareh, A.B..b1014693321-09-0627-06-02991000910229707536LE006 53.2.8 ELKV. 112006000046657le006-E0.00-l- 00000.i1017495327-06-02LE006 53.2.8 ELKV. 212006000046664le006-E0.00-l- 00000.i1017496527-06-02Electron beams, lenses, and optics186510UNISALENTOle00601-01-95ma -engus 02