00405nam a2200121Ia 4500008004100000082001900041100002100060245007200081260004400153300001400197500004200211700003000253251030b        |||||||| |||| 00| 0 eng d  a510.9bC858.WM  aCourant, Richard  aWhat is mathematics; an elementary approach to ideas and methodsb/  aLondon:bOxford University Press,c1967  axx, 521p.  a"Lib. also has :- 1996 edition. 566p.  aRobbins, Herberteauthor.