TY  - BOOK
AU  - Dummer,Geoffrey William Arnold
AU  - Robertson,J.Mackenzie
TI  - British special quality valves and electron tube devices data annual 1964-65
U1  -  621.3137 
PY  - 1964///
CY  - Oxford
PB  - Pergamon Press
KW  - Electron tubes
KW  - Yearbooks
KW  - Miniature electronic equipment
ER  -