000			00322nam a2200133Ia 4500
008			180612s9999||||xx |||||||||||||| ||und||
041			_aen
082			_a630.015
100			_aCOCHRAN, William G.
245		0	_aExperimental designs
260			_aNew York. _bJohn wiley & sons. _c1957
300			_axiv, 618 P
942			_cPR
999			_c47716 _d47716