| Author | Titles | 1.
| Spivey, Nigel | 3 | 2.
| Spix, Johann Baptist von | 1 | 3.
| Spnecer, Herbert | 1 | 4.
| Spock, Richard | 1 | 5.
| Spodek, Bernard | 2 | 6.
| Spodek, Howard | 1 | 7.
| Spoelberch de Lovenjoul, Visconde de, 1836-1907 | 1 | 8.
| Spoerri, Daniel, 1930- | 5 | 9.
| Spohn, Annette | 1 | 10.
| Spohr, Wilhelm | 3 |
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