TY  - BOOK
AU  - Pierce,John Robinson
TI  - Theory and design of electron beams
AV  - TK7815 .P5 1954
U1  - 621.38621.34* 
PY  - 1954///
CY  - New York
PB  - Van Nostrand
KW  - Electron beams
N1  - Includes bibliography
ER  -