000 00284nam a2200145Ia 4500
082 _aJ510/Som
100 _aSomayajulu, Mridula
526 _dNTB
526 _aUG
942 _cBK
245 _aNew mental maths
260 _aNew Delhi
_bScholars hub
300 _a64
546 _aE
999 _c76766
_d76766