00331nam a2200121Ia 4500008004100000040003800041100002300079245002100102250000600123260004700129300001700176653001600193211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aSierpinski, Waclaw 0aGeneral topology  a2  bUNIVERSITY OF TORONTO PRESSaTORONTOc1956  aXII,290 P p.  aMATHEMATICS