000 00368nam a2200157Ia 4500
008 220204s9999 xx 000 0 und d
082 _bCOC
100 _aCochran, William
245 0 _aSampling techniques
250 _aEd.3
260 _aDelhi
_bWiley Eastern
_c1990
650 _aRandom sampling
650 _aRegression estimation
700 _aG
942 _cBK
999 _c40607
_d40607