#book_binding__binding__cover__back  the front and back covering of a book; "the book had a leather binding"
  supertype:  #protective_cover__protective_covering__protection  a covering that is intend to protect from damage or injury; "they had no protection from the fallout"; "wax provided protection for the floors"
  part of:  #book.artifact
  subtype:  #half_binding  book binding in which the spine and part of the sides are bound in one material and the rest in another
  subtype:  #three-quarter_binding__threequarterbinding  the spine and much of the sides are a different material from the rest of the cover

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