00271nam a2200109 a 450000500170000008200160001710000180003324500350005126000330008630000290011963000130014820251202164319.0  a519.b5 GUL  aGulezian, R.C  aStatistics for decision making  aPhiladelphiabSaundersc1979  axvii, 665 p.b22 cm.cPB  aStastics