| Verfasser | Häufigkeit |
|---|---|
| Pojeta, John | 12 |
| Gordon, Mackenzie | 2 |
| Berdan, Jean M. | 1 |
| Darrough, Guy | 1 |
| Hoare, Richard D. | 1 |
| Kriz, Jiri 1947- | 1 |
| Peterson, Warren L. | 1 |
| Runnegar, Bruce | 1 |
| Sando, William J. | 1 |
| Sohl, Norman Frederick | 1 |
| Springer, Dale A. | 1 |
| Swadley, W. C. | 1 |
| Vendrasco, M. J. | 1 |
| Weir, Gordon W. | 1 |
| Yochelson, Ellis L. 1928-2006 | 1 |