TY  - BOOK
AU  - Parr, G
TI  - Cathode ray tube: And its applications
U1  - 621.381542 21st ed.
PY  - 1943///
CY  - London
PB  - Chapman and Hall
KW  - Electical engineering
N1  - ( First published under the title the low Voltage Cathode Ray Tube)
ER  -