000 00313nam a2200121Ia 4500
008 211224s9999 xx 000 0 und d
020 _a9788175351974
082 _a372.7 DUN
245 0 _aAdd and take away to 20
260 _aMumbai:
_bSheth Publication House,
_c2009
300 _aun paged
650 _aMathematics
999 _c10634
_d10634