| Verfasser | Häufigkeit |
|---|---|
| Helliwell, Robert Arthur | 1 |
| Hopkins, Frederick Neville | 1 |
| Pettit, Joseph Mayo | 1 |
| Rambo, William Ralph | 1 |
| Terman, Frederick Emmons 1900-1982 | 1 |
| WATKINS, DEAN A. | 1 |
| Watkins, Gordon G. | 1 |
| Verfasser | Häufigkeit |
|---|---|
| Helliwell, Robert Arthur | 1 |
| Hopkins, Frederick Neville | 1 |
| Pettit, Joseph Mayo | 1 |
| Rambo, William Ralph | 1 |
| Terman, Frederick Emmons 1900-1982 | 1 |
| WATKINS, DEAN A. | 1 |
| Watkins, Gordon G. | 1 |