"materialTypes" : {

      "archivalMix"   : "p",
      "audioBook"     : "u",
      "bookText"      : "a",
      "computerFile"  : "m",
      "dvd"           : "v",
      "eAudioBook"    : "n",
      "eBook"         : "z",
      "eMusic"        : "q",
      "eVideo"        : "3",
      "filmSlidesEtc" : "g",
      "game"          : "x",
      "kit"           : "o",
      "largePrint"    : "l",
      "manuscript"    : "t",
      "manuscriptMus" : "d",
      "map"           : "e",
      "microForm"     : "h",
      "misc"          : "-",
      "musicCd"       : "y",
      "musicNonCd"    : "j",
      "picture"       : "k",
      "score"         : "c",
      "spokenWord"    : "i",
      "vhs"           : "s",
      "webResource"   : "w",
      "3dObject"      : "r",
      "teacherSet"    : "8",
      "blueRay"       : "b"
    }