#issue.periodical__number  one of a series published periodically; "she found an old issue of the magazine in her dentist's waitingroom"
  supertype:  #periodical  a publication that appears at fixed intervals
  subtype:  #edition.issue  an issue of a newspaper; "he read it in yesterday's edition of the Times"
  member of:  #serial_publication__series__serial  a periodical that appears at scheduled times

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