| Verfasser | Häufigkeit |
|---|---|
| Duffy, Stephen J. | 7 |
| Vanloon, Gary W. | 4 |
| VanLoon Gary W. | 2 |
| Duffy, Dennis L. | 1 |
| Duffy, John M. 1943- | 1 |
| Johnson, Gary E. | 1 |
| VanLoon, Gary W. 1940- | 1 |
| Vikan, Gary 1947- | 1 |
| Verfasser | Häufigkeit |
|---|---|
| Duffy, Stephen J. | 7 |
| Vanloon, Gary W. | 4 |
| VanLoon Gary W. | 2 |
| Duffy, Dennis L. | 1 |
| Duffy, John M. 1943- | 1 |
| Johnson, Gary E. | 1 |
| VanLoon, Gary W. 1940- | 1 |
| Vikan, Gary 1947- | 1 |