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020 _c180
_a9788175416147
040 _aBED
082 _a510.712 BAN-T
100 _aBanga, Chaman Lal
_92964
245 0 _aTeaching of mathematics
260 _bShipra Publication
_aDelhi
_c2012
300 _a284p.
650 _aEducation
_93360
942 _cBK
999 _c415
_d415