000			00307nam a2200133Ia 4500
001			14880
008			170722s9999 xx 000 0 und d
100			_aWallace Andrew H.
245			_aDifferential topology : _bFirst steps /
260			_c1968
653			_aMathematics
653			_aTopology
942			_cGEN
999			_c4960 _d4960