00321nam a2200133Ia 45000030006000000080041000060400015000471000038000622450038001002500011001382600009001495460012001580050017001700STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aEilenberg Samuel; Steenrod Norman  aFoundations of algebraic topology  aSecond  c1952  aEnglish20220125165938.0