000 00269nam a2200121Ia 4500
008 230321s9999 xx 000 0 und d
082 _a372.7
_bMAN
100 _aMangal, S.K
245 0 _aTeaching of Mathematics
260 _bTandon
_c2012
300 _a572
942 _cBK
999 _c2931
_d2931