| title | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Blue Cats and Chartreuse Kittens | 978-0-7167-4088-9 | 2001 | ||
| Farm Management | 978-0-07-340094-5 | 2015 | Ronald Kay · William Edwards | |
| Farm Management | 978-0-07-354587-5 | 2011 | Ronald Kay · William Edwards | |
| Farm Management | 978-0-07-302829-3 | 2007 | Ronald Kay · William Edwards | |
| Farm Management | 978-0-07-242868-1 | 2003 | Ronald Kay · William Edwards | |
| Focus on Innovators and Innovations | 978-0-13-007105-7 | 1993 | ||
| Higher Learning: Setting Your Career and Life Direction | 978-1-56370-188-7 | 1995 | T. Walter Wannie | |
| Jeder blaue Buchstabe duftet nach Zimt | 978-3-442-15242-1 | 2003 | ||
| Succeeding In Your Work And Community | 978-1-56370-190-0 | 1997 | ||
P. Duffy · Patricia A. Duffy · Patricia Duff · Patricia Lynne Duffy · Patrick Davey · Patrick Debû · Patrick DePoy · Patrick Duff · Patrick Duffie · Patrick Duffy · Patrick Dupouey · Peterson / Davie
Goldmann Verlag · Jist Works · McGraw-Hill · Prentice Hall · W. H. Freeman