| Verfasser | Häufigkeit |
|---|---|
| Montgomery, Douglas C. 1943- | 6 |
| Vining, G. Geoffrey | 6 |
| Peck, Elizabeth A. | 3 |
| Peck, Elizabeth A. 1953- | 3 |
| Vining, G. Geoffrey 1954- | 3 |
| Kowalski, Scott | 1 |
| Montgomery, Douglas C. | 1 |
| Myers, Raymond H. | 1 |
| Verfasser | Häufigkeit |
|---|---|
| Montgomery, Douglas C. 1943- | 6 |
| Vining, G. Geoffrey | 6 |
| Peck, Elizabeth A. | 3 |
| Peck, Elizabeth A. 1953- | 3 |
| Vining, G. Geoffrey 1954- | 3 |
| Kowalski, Scott | 1 |
| Montgomery, Douglas C. | 1 |
| Myers, Raymond H. | 1 |