000 00264nam a2200121 4500
082 _a370
_bAUE.D
084 _2Colon Classification
100 _aAuer
245 _aDiscussion leaders /
_cby Auer
260 _bHarper,
_c1954.
650 _aEducation
942 _cBK
999 _c682263
_d682263