TY  - BOOK
AU  - International Conference on Residual Gases in Electron Tubes (4th
AU  - Giorgi, T. A., ed.
AU  - Porta, P. della., ed.
TI  - Residual gases in electron tubes
SN  - 0122855507
U1  - 621.3815106 
PY  - 1971///
CY  - London
PB  - Academic Press
ER  -