#signature.sheet_of_paper  a sheet with several pages printed on it; it folds to page size and is bound with other signatures to form a book
  supertype:  #sheet_of_paper__sheet__piece_of_paper  used for writing or printing
  part of:  #book  a copy of a written work or composition that has been published (printed on pages bound together); "I am reading a good book on economics"

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