00454nam a2200169 a 450000500170000002000150001708200130003210000190004524500270006426000380009130000210012969000130015096400160016399700190017999900190019895200670021720251203111010.0  a8131504654  a514bCRO  aCroom, Fred H.  aPrinciples of topology  aAustraliabCengage Learningc2008  axi,312p22cm.bPB  aTopology  bcdefg_  a132446 LIBSC C  c110203d110203  00104070aPUbPUd2008-11-27g169.60l0o514 CROp132446yBK