#journal.book  a record book as a physical object
  supertype:  #book.artifact__volume  (books as a physical objects) a number of pages bound together; "he used a large book as a doorstop"
  subtype:  #ledger__daybook  an accounting journal as a physical object: "he bought a new daybook"
  subtype:  #diary  a personal journal (as a physical object)

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