El-Kareh, A. B., 1932- Electron beams, lenses, and optics [by] A. B. El-Kareh [and] J. C. J. El-Kareh. - New York Academic Press 1970 - 2 v. ill. 24 cm. Includes bibliographies and index. ISBN: 0122380010 Subjects--Topical Terms: Electron optics. LC Class. No.: QC447 / .E53 Dewey Class. No.: 537.56 ELK 1970