| Author | Titles | | 1.
| Sommer, Degenhard, 1930- | 1 | | 2.
| Sommer, Dorothea | 1 | | 3.
| Sommer, Édouard, 1822-1866 | 8 | | 4.
| Sommer, Frederick, 1905-1999 | 6 | | 5.
| Sommer, Georg | 2 | | 6.
| Sommer, P. | 1 | | 7.
| Sommer, Robert | 1 | | 8.
| Sommerard, E. du, 1817-1885 | 1 | | 9.
| Sommerard, Edmond du, 1817-1885 | 0 | | 10.
| Author is: Sommerard, E. du, 1817-1885 | 1 | | 11.
| Sommerfeld, A. | 2 |
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