000 00327nam a2200133Ia 4500
008 140317s9999 xx 000 0 und d
082 _a311.21
100 _aCochran,William G.
245 _aSampling techniques. 2nd ed.
260 _aNew Delhi
_bWiley Eastern
_c1972
300 _a413
653 _aStatistics
942 _2ddc
_cBK
999 _c6290
_d6290