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041 _aeng
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084 _aB28
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100 _aElhance, D.N.
_9826189
245 0 _aPvactical problems in satistics
_cby D N Elhance.
260 _aAllahabad
_bKitab Mahal
_c1957
300 _a747p.
365 _aINR
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925 _g11.75
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