00281    a2200109   4500020001500000082001700015100001900032245003000051260005100081300002100132650001800153  a8173196567  a514.325bKUM  aKumarasena, S.  aTopology of metric spaces  aNew DelhibNarosa publishing housec2005g2006  aix, 152p.c25cm.  aMetric spaces