00301nam a2200109Ia 4500008004100000082001700041100002500058245002400083260004400107300001600151650002400167140113s9999    xx            000 0 und d  a311.213.2 J3  a"Cochran, G.William"  aSampling techniques  b"Bombay : Asia publishing  house, 1953"  a"HB, 330p."  aSampling techniques