| Verfasser | Häufigkeit |
|---|---|
| Brown, John Seely | 2 |
| Brown, John Seely 1940- | 2 |
| Duguid, Paul | 2 |
| Duguid, Paul 1954- | 2 |
| Duguid, James O. | 1 |
| Dunrud, C. R. | 1 |
| Maberry, John O. | 1 |
| Milne, John Duguid | 1 |
| Osterwald, Frank W. | 1 |
| Verfasser | Häufigkeit |
|---|---|
| Brown, John Seely | 2 |
| Brown, John Seely 1940- | 2 |
| Duguid, Paul | 2 |
| Duguid, Paul 1954- | 2 |
| Duguid, James O. | 1 |
| Dunrud, C. R. | 1 |
| Maberry, John O. | 1 |
| Milne, John Duguid | 1 |
| Osterwald, Frank W. | 1 |