00311nam a2200109Ia 4500008004100000040003800041100001700079245003900096260003300135300001700168653001600185211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aWallace, A H 0aIntroduction to algebraic topology  bPERGAMON PRESSaOXFORDc1967  aVII,198 P p.  aMATHEMATICS