00313nam a2200121Ia 4500082001800000100002100018245003200039260004900071300002200120490003900142500000500181700000500186  a514bSt814.TF  aSteenrod, Norman  aTopology of fibre bundlesb  aNew JerseybPrinceton University Pressc1951  aviii, 229p. Index  aPrinceton Mathematical seriesv 14  a  a