TY  - BOOK
AU  - EL- KAREH, A B
AU  - EL- KAREH, J C J
TI  - Electron Beams, Lenses and Optics Vol.1
U1  - D65 
PY  - 1970///
CY  - San Diego
PB  - Academic Press
KW  - ELECTRON OPTICS
ER  -