| Verfasser | Häufigkeit |
|---|---|
| Stillwell, Paul | 2 |
| Ferreira, Jr., Joseph | 1 |
| Geertman, Stan 1955- | 1 |
| Goodspeed, Robert | 1 |
| Keith, Robert Taylor Scott 1905-1989 | 1 |
| Long, Robert Lyman John | 1 |
| Stillwell, John | 1 |
| Verfasser | Häufigkeit |
|---|---|
| Stillwell, Paul | 2 |
| Ferreira, Jr., Joseph | 1 |
| Geertman, Stan 1955- | 1 |
| Goodspeed, Robert | 1 |
| Keith, Robert Taylor Scott 1905-1989 | 1 |
| Long, Robert Lyman John | 1 |
| Stillwell, John | 1 |