W R. · W.W. · William R. · William W.
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Foundations of Orientation and Mobility, 3rd Edition: Volume 1, History and Theory | 978-0-89128-448-2 (0-89128-448-6) | 2010 | Richard L. Welsh · Bruce B. Blasch |
| Foundations of Orientation and Mobility: Instructional Strategies and Practical Applications Vol.2 | 978-0-89128-461-1 (0-89128-461-3) | 2010 | Richard L. Welsh · Bruce B. Blasch |