000 00349nam a22001337a 4500
020 _a9780195687101
082 _a510
_bCOU.W
100 _aRichard Courant
245 _aWhat is mathematics: An elementary approach to ideas and methods
250 _a2
260 _aNew Delhi
_bOxford university press
_c2013
650 _aMathematics
942 _cBK
999 _c199415
_d199415