000 00334nam a2200145Ia 4500
020 _a9788131910825
082 _bT 73
_a510
100 _a"Seema Chawla"
245 0 _aMental Maths
260 _bB.Jain Publishing Ltd
_aINDIA
_c2003
300 _a48
944 _cTB
999 _c584580
_d584580