{
  "barcode": {
    "new": "6 63593 12006 9, 6 63593 12007 6",
    "old": "6 63593 12006 9"
  },
  "comments": {
    "new": "ISBN: 1-892817-11-X, 1-892817-21-7",
    "old": "ISBN: 1-892817-11-X"
  }
}