{
  "barcode": {
    "new": "0 20626 72208 7, 0 20626 72209 4",
    "old": "0 20626 72208 7"
  },
  "comments": {
    "new": "ISBN: 0-7849-2476-7, 0-7849-2477-5",
    "old": "ISBN: 0-7849-2476-7"
  }
}