000			00320nam a2200145Ia 4500
008			130410s9999 xx 000 0 und d
100			_aCOCHRAN W.G.
245			_aSAMPLING TECHNIQUES
250			_a
260			_bWILEY EASTREN _a _c1979
270			_aDELHI
300			_a
650			_aMATHEMATICS _b
942			_2ddc _cBK
999			_c1966 _d1966