00294nam a2200109 a 450000500170000002000150001708200160003210000200004824500650006826000290013330000220016220251203110057.0  a3764338407  a514.72bBLO  aBloch, Ethan D.  aFirst Course in Geometric Topology and Differential Geometry  aBostonbBirkhauserc1996  axii,421p.c23 cm.