00275nam a2200121Ia 45000030006000000080041000060400015000471000021000622450032000832600009001155460012001240050017001360STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aMoore Theral, O.  aElementary general topology  c1994  aEnglish20220125165939.0