There are 3 books by Jean H. Duffy on BookOrb. A strong starting point is Using French vocabulary (1999). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Jean H. Duffy written?
BookOrb lists 3 books by Jean H. Duffy.
Where should I start with Jean H. Duffy?
A good starting point is Using French vocabulary (1999).
What is the Jean H. Duffy books in order list?
In publication order: 1. Using French vocabulary (1999), 2. Signs and designs (2003), 3. Thresholds of Meaning (2011).