00299nam a2200121Ia 4500008004100000082001500041100001700056245003000073260004200103300000800145942000700153999001700160190709s9999    xx            000 0 und d  a513.83 B66  aBourgin, D G 0aModern algebraic topology  aNew yorkbThe macmillan companyc1963  a544  cBK  c37661d37660