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040 _aMAIN
041 _aEnglish
082 _a512.81
100 _aSingal, M. K. and Gupta, J. D.
245 3 _aAn approach to numbers
_bAn approach to numbers, Delhi : R. Chand & Company, 1990
_cM. K. Singal and J. D. Gupta
260 _c1990
_bR. Chand & Company
_aDelhi
942 _cBK
999 _c40752
_d40752