six sigma : (3JMbjb GdObI aj EOGQI GdLhOI eaGgje h JWHjbGJ (B/ s - (3GdfYjej, eMeO YHO GdYGds; (3UhjU, QGJH Ldjds ((3GdGQOf (B:s (3EKQGA ddfTQ h GdJhRjY,s, 2008)
Keywords: (3GdLhOIs; (3LeY GdHjGfGJs; (3GdeTGQjYs; (3GdObIs; (3JObjb GdLhOIs