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Concept information

events and action > periods of time

Preferred term

periods of time  


  • Hierarchical concept

Broader concept


  • A temporal interval with qualities or characteristics through which it can be recognised and given at least an approximate time of beginning and end.

Scope note

  • This is a hierarchical concept not to be used in subject cataloging.

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RDF/XML TURTLE JSON-LD Created 1/1/14, last modified 2/8/23