00284nam a2200121Ia 4500082001700000100001800017245003400035260003000069300002100099490003200120500000500152700000500157  a514bB879.EM  aBrown, Ronald  aElements of modern topologyb  aLondonbMcGraw-Hillc1968  axvi, 351p. Index  aEuropean Mathematics series  a  a