000 00289nam a2200121Ia 4500
008 180611s9999||||xx |||||||||||||| ||und||
041 _aen
082 _a510
100 _aGUPTA, S.K.
245 0 _aMathematics Today : Book 0
260 _aNew Delhi
_bS.Chand and Co. Ltd.
_c1991
942 _cLL
999 _c7432
_d7432