Books

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Across
  1. 3. A book with a flexible paper cover.
  2. 4. A group of three.
  3. 7. Main division of a book.
  4. 8. One side of one leaf.
Down
  1. 1. Part 2.
  2. 2. A person mentioned in a book.
  3. 5. Category.
  4. 6. The back of a book.