| Author | Titles | | 1.
| Sommer, Robert | 1 | | 2.
| Sommerard, E. du, 1817-1885 | 1 | | 3.
| Sommerard, Edmond du, 1817-1885 | 0 | | 4.
| Author is: Sommerard, E. du, 1817-1885 | 1 | | 5.
| Sommerfeld, A. | 2 | | 6.
| Sommerfeld, O. | 3 | | 7.
| Sommerhalder, Monika | 1 | | 8.
| Sommer-Mathis, Andrea | 1 | | 9.
| Sommervogel, Carlos | 1 | | 10.
| Somoff, Andrei, 1830-1909 | 1 | | 11.
| Somol, R. E. | 1 |
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