[
  {
    "key": "PAPERBACK",
    "type": "doc_identifiers_materials",
    "text": "Print version, paperback"
  },
  {
    "key": "HARDBACK",
    "type": "doc_identifiers_materials",
    "text": "Print version, hardback"
  },
  {
    "key": "DIGITAL",
    "type": "doc_identifiers_materials",
    "text": "Digital version"
  },
  {
    "key": "PRINT_VERSION",
    "type": "doc_identifiers_materials",
    "text": "Print version"
  },
  {
    "key": "REPRINT_HARDBACK",
    "type": "doc_identifiers_materials",
    "text": "Print version, hardback (reprint)"
  },
  {
    "key": "REPRINT_PAPERBACK",
    "type": "doc_identifiers_materials",
    "text": "Print version, paperback (reprint)"
  },
  {
    "key": "AUDIO_CD",
    "type": "doc_identifiers_materials",
    "text": "Audio CD"
  },
  {
    "key": "AUDIOBOOK",
    "type": "doc_identifiers_materials",
    "text": "Audiobook"
  },
  {
    "key": "CD_ROM",
    "type": "doc_identifiers_materials",
    "text": "CD-ROM"
  },
  {
    "key": "DISKETTE",
    "type": "doc_identifiers_materials",
    "text": "Diskette"
  },
  {
    "key": "DVD",
    "type": "doc_identifiers_materials",
    "text": "DVD"
  },
  {
    "key": "VHS",
    "type": "doc_identifiers_materials",
    "text": "VHS"
  }
]
