00471nam a2200145Ia 4500003000900000008004100009040001600050080001200066100001600078245014700094260004200241300001000283650001600293700001600309IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a51bCOU  aCourant, R. 0aWhat is mathematics ?ban elementary approach to ideas and methodscR. Courant and H. Robbins                                                   aOxfordbOxford University Pressc1941  a521p.  aMathematics  aRobbins, H.