ASQ Certified Six Sigma Yellow Belt Study Guide Second EditionErica L. Farmer, Grace L. Duffy · First published 2022Open the Tome
ASQ Certified Quality Improvement Associate HandbookGrace L. Duffy, Sandra L. Furterer · First published 2020Open the Tome
The certified quality improvement associate handbook : basic quality principles and practicesGrace L. Duffy · First published 2015Open the Tome
Public Health Quality Improvement HandbookRon Bialek, Grace L. Duffy, John W. Moran · First published 2009Open the Tome
The Public Health Quality Improvement HandbookRon Bialeck, Grace L. Duffy, John W. Moran · First published 2009Open the Tome
Quality function deployment and lean-six sigma applications in public healthGrace L. Duffy · First published 2006Open the Tome
The quality improvement handbookGrace L. Duffy, Russ Westcott · First published 2002 · Latest edition 2006Open the Tome
The executive guide to improvement and changeG. Dennis Beecroft, Grace L. Duffy, John W. Moran · First published 2002Open the Tome
