Known problems

  • Language:
    Is often determined heuristically..
  • Country:
    In many, but not all, cases correct.
  • Publication year:
    In most cases correct.
  • ISBN:
    Only in very rare cases not correct.
  • New/used:
    In rare cases not correct.
  • Private/professional seller:
    In some cases not correct.
  • Hardcover/paperback:
    In many, but not in all, cases correct.
  • Dust cover:
    In many, but not in all, cases correct.
  • Signed:
    In many, but not in all, cases correct.
  • Edition/first edition:
    In many, but not in all, cases correct.
  • Reprint/print on demand:
    In many, but not in all, cases correct.