000 00336nam a2200145Ia 4500
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040 _e136865
_aMAIN
041 _aEnglish
082 _a519.5 G959S
100 _aGupta, S P
245 0 _aStatistical methods
260 _aNew Delhi
_bS Chand
_c1989
300 _a194p p.
942 _cBK
999 _c63984
_d63984