00283nam a2200121Ia 45000030006000000080041000060400015000471000016000622450033000782600021001115460012001320050017001440STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBurshaw, D.  aElements of general topology  bJohn Wileyc1963  aEnglish20220125165939.0