Keller, Paul Six Sigma demystified hard stuff made easy - Second Edition - New York McGraw-Hill 2011 - 510 p ISBN: 9780071746793 Subjects--Topical Terms: Management LC Class. No.: 658.562 KEL 2011 Dewey Class. No.: 658.562 KEL 2011 National Library of Medicine Call No.: 658.562 KEL 2011