Preferred term
TK7871.7-TK7871.84 Electron tubes
Broader concept
Broader conceptEntry terms
Alternative terms for the concept.- Electric valves
- Valves, Electric
Group members
Members of the groupNotation
Code that uniquely identifies a concept within a concept scheme.- TK7871.7-TK7871.84
URI
http://www.yso.fi/onto/lcsh/sh85042239