{
  "comments": {
    "new": "ISBN: 1-57629-278-9"
  },
  "error_count": {
    "new": "0"
  },
  "ring_codes": {
    "new": "CDICD6400 R1J 4 IFPI L239 IFPI 4121\nCDICD6400 R2H IFPI L238 21 IFPI 4121",
    "old": "CDICD6400 R1J 4 IFPI L239 IFPI 4121"
  },
  "version": {
    "new": "1.1"
  }
}