{
  "comments": {
    "new": "ISBN: 1-57629-318-1"
  },
  "error_count": {
    "new": "1"
  },
  "ring_codes": {
    "new": "PSRM-009920\t4 IFPI L330 IFPI 503F",
    "old": "IFPI 503F"
  }
}