کتاب های Grace L. Duffy
![Modular kaizen : continuous and breakthrough improvement](http://cdn.ketabkoo.com/covers/1/153288-n.jpg)
Modular kaizen : continuous and breakthrough improvement
Duffy, Grace L, 2014![Quality Function Deployment and Lean-Six Sigma Applications in Public Health](http://cdn.ketabkoo.com/covers/6/610553-n.jpg)
Quality Function Deployment and Lean-Six Sigma Applications in Public Health
Grace L. Duffy, John W. Moran,, 2010![Executive focus : your life and career](http://cdn.ketabkoo.com/covers/10/1004237-n.jpg)
Executive focus : your life and career
Duffy, Grace L., 2008![The ASQ CSSYB Study Guide](http://cdn.ketabkoo.com/covers/14/1449723-n.jpg)