00447nam a2200133Ia 4500008004100000020001800041040003800059100002300097245011800120250000800238260002700246300001700273653002300290220101s9999    xx            000 0 und d  a3-642-01199-3  cJayakar Knowledge Resource Centre  aAlgebraic topology 0aAlgebraic topology: abel symposium 2007:proceedings of the fourth abel Symposium. Oslo, Norway, August 5-10, 2007  a1st  bSpringeraBerlinc2009  axiv,409p. p.  aAlgebraic topology