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020 _a0412276305
050 0 0 _aR853.
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100 1 _aAltman, Douglas G.
245 1 0 _aPractical statistics for medical research
260 _aLondon ;
_aNew York :
_bChapman and Hall,
_c1991.
300 _axii, 611 p. :
_bill. ;
650 0 _aMedicine
856 4 2 _uhttp://www.loc.gov/catdir/enhancements/fy0646/91124890-d.html
942 _cBK
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_d684