00294nam a2200121Ia 45000030006000000080041000060400015000471000020000622450030000822600031001125460012001430050017001550STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aSteenrod Norman  aTopology of fibre bundles  bPrinceton universityc1960  aEnglish20220125165938.0