000 00437nam a2200169Ia 4500
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008 008 250505s9999 xx 000 0 eng d
037 _aTextual
040 _aFEDL
_beng
_cFEDL
041 _aeng
_2eng
084 _a510.7, AIY
_qFEDL
100 _aAiyangar N K
_9757638
245 0 _aTeaching of mathematics
300 _aix,410p.
942 _cTEXL
_h510.7, AIY
999 _c1325652
_d1325652