00301nam a2200109Ia 4500008004100000040003800041100001400079245003300093250000800126260004100134300001600175211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aBushaw, D 0aElements of general topology  a1st  bJohn Wiley and SonsaNew ayorkc1963  avii,166p p.