000			00385nam a2200133Ia 4500
008			220901s1999 xx 000 0 eng d
082			_a519.52 P9;4
100			_aCochran, William G
245			_aSampling techniques
250			_a3rd ed.
260			_aNew York _bJohn Wiley & sons _c1999
650			_aMathematics,Sampling techniques,Probability,Random sampling _93485
942			_2ddc _cBK
999			_c3552 _d3552