00313nam a2200133Ia 45000030006000000080041000060400015000471000045000622450024001072500010001312600009001415460012001500050017001620STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aSnedecor George, W.; Cochran William, G.  aStatistical methods  aSixth  c1918  aEnglish20220125170035.0