| Verfasser | Häufigkeit |
|---|---|
| Keman, Hans 1948- | 6 |
| Woldendorp, Jaap | 4 |
| Budge, Ian 1936- | 3 |
| Woldendorp, Jaap 1952- | 3 |
| Woldendorp, J. J. | 1 |
| Woldendorp, Jan W. | 1 |
| Woldendorp, Jan Wijbo | 1 |
| Verfasser | Häufigkeit |
|---|---|
| Keman, Hans 1948- | 6 |
| Woldendorp, Jaap | 4 |
| Budge, Ian 1936- | 3 |
| Woldendorp, Jaap 1952- | 3 |
| Woldendorp, J. J. | 1 |
| Woldendorp, Jan W. | 1 |
| Woldendorp, Jan Wijbo | 1 |