{
  "comments": {
    "new": "ISBN: 1-57629-052-2"
  },
  "error_count": {
    "new": "1"
  },
  "ring_codes": {
    "new": "PSRM-005520\t1 A08 IFPI 50B5\nPSRM-005520\tF4\t1A\t02 IFPI L424 IFPI 7298",
    "old": "PSRM-005520 1 A08 IFPI 50B5"
  }
}