| Verfasser | Häufigkeit |
|---|---|
| Gibson, William 1948- | 2 |
| Robert, Peter | 2 |
| Anderson, Roger C. | 1 |
| Baskin, Jerry M. | 1 |
| Burgess, John William 1844-1931 | 1 |
| Fralish, James S. | 1 |
| Heinz, Reinhard | 1 |
| Knox, Emily 1976- | 1 |
| Verfasser | Häufigkeit |
|---|---|
| Gibson, William 1948- | 2 |
| Robert, Peter | 2 |
| Anderson, Roger C. | 1 |
| Baskin, Jerry M. | 1 |
| Burgess, John William 1844-1931 | 1 |
| Fralish, James S. | 1 |
| Heinz, Reinhard | 1 |
| Knox, Emily 1976- | 1 |