000			00332nam a22001337a 4500
020			_a0852261225
082			_a519.5COC.
100			_aWilliam G. Cochran.
245			_aSampling Techniques.
260			_aNew Delhi _bWiley Eastern private limited. _c1972.
300			_axvii, 413p. _b22cm.
500			_aIncludes index.
942			_cBK
999			_c16690 _d16690