00311nam a2200133Ia 45000030006000000080041000060400015000471000016000622450038000782600026001163000006001425460012001480050017001600STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aStefik Mark  aIntroduction to knowledge systems  bMorgan Kaufmannc2005  a0  aEnglish20220125160207.0