TY  - BOOK
AU  - Keller, Paul
AU  - Keller, Paul
TI  - Six Sigma demystified :  hard stuff made easy    
SN  - 9780071746793
AV  - 658.562 KEL 2011 
U1  - 658.562 KEL 2011 
PY  - 2011///
CY  - New York
PB  - McGraw-Hill
KW  - Management
ER  -