00333nam a2200121Ia 4500008004000000020001800040082001700058100001900075245002700094260006400121300001200185650001400197210210b2005   xxu||||| |||| 00| 0 eng d  a0 07 059995 5  a658.562 KELS  aKELLER (Paul).  aSix sigma demystified.  aNew  Delhi.bTata McGraw-Hill Publishing Company Ltd.c2005  axiv,480  aSix sigma