00505nam a2200181   450000500170000000700040001700800040002104000090002505000210003410000230005524500620007826000530014030000240019344000360021750000190025365000260027270000250029820150415113954.0000000  aUOEL  aQA611b.S53 1952  aSierpinski, Waclaw  aGeneral topology /cWaclaw Sierpinski, C. Cecilia Krieger  aToronto ;bUniversity of Toronto Press ,cc1952.  axii, 290 p. :bill.  aMathematical expositionsnno. 7  aIncludes index  aTopologyxMathematics  aKrieger, C. Cecillia