000 00302nam a2200121Ia 4500
008 221221s9999 xx 000 0 und d
041 _aENG
082 _a510
_bSIN/U
100 _aSingha, K B [Et Al]
245 0 _aUnderstanding Mathematics
260 _aNew Delhi
_bUniversity Press
_c2002
942 _cBK
999 _c33752
_d33752