| Verfasser | Häufigkeit |
| Spencer, Thomas |
49 |
| Spencer, Thomas 1793-1857 |
4 |
| Russell, John J. |
3 |
| Spencer, Thomas S. |
3 |
| Adler, Lenard |
2 |
| Spencer, Thomas J. |
2 |
| Wilens, Timothy E. |
2 |
| Atay, Ahmet |
1 |
| Bollinger, Christopher |
1 |
| Deprez, Alexandra |
1 |
| Dröge, Susanne |
1 |
| Gallagher, Liz |
1 |
| Gradziuk, Artur |
1 |
| Griffin, John Joseph 1802-1877 |
1 |
| Hunt, Robert 1807-1887 |
1 |
| Kobell, Franz von 1803-1882 |
1 |
| Liebig, Justus von 1803-1873 |
1 |
| Marcu, Andrei |
1 |
| Nicoletti, John |
1 |
| Oberthür, Sebastian |
1 |