00388nam a2200145Ia 4500008004100000020001500041082001600056100002000072245007000092250000600162260004400168300000500212650000500217700002000222140316s9999    xx            000 0 und d  a0195105192  a510bCOU/WH  aCourant,Richard  aWhat is mathematics : an elementary approach to ideas and methods  a2  aNew YorkbOxford University Pressc1996  a  a  aRobbins,Herbert