| Author | Titles | 1.
| Soós, Vera Baksa | 1 | 2.
| Soothill, William Edward | 1 | 3.
| Sopa, António | 1 | 4.
| Sopandi, Setiadi | 2 | 5.
| Sopeña, Federico | 1 | 6.
| Sopena Ibanez, Federico, 1917-1991 | 2 | 7.
| Sopena, J. A. | 1 | 8.
| Soper, Alexander | 2 | 9.
| Soper, Alexander Coburn | 1 | 10.
| Soper, Eileen | 12 |
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