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Concept information

Vacuum > Vacuum technology > Vacuum-tubes

Preferred term

TK7871.72-TK7871.79Vacuum-tubes  

Broader concept

Notation

  • TK6565.V3
  • TK7871.72-TK7871.79
  • TP159.V3

URI

http://www.yso.fi/onto/lcsh/sh85141746

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RDF/XML TURTLE JSON-LD Created 2/11/86, last modified 11/25/98