00280nam a2200121Ia 45000030006000000080041000060400015000471000020000622450038000822600009001205460012001290050017001410STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBPB Publication  aPC learning LABS teachers netware  c1995  aEnglish20220125170155.0