| Author | Titles | | 1.
| Seabra, Visconde de | 1 | | 2.
| Seabra, Zita | 1 | | 3.
| Seaby, Herbert Allen | 7 | | 4.
| Seaby, Peter John | 1 | | 5.
| SEACEX, Socidad estatal para la acción cultural exterior | 1 | | 6.
| Seaford, Richard | 1 | | 7.
| Seafree, J. | 2 | | 8.
| Seager, Richard B. | 1 | | 9.
| Seago, Alex | 1 | | 10.
| Séailles, Gabriel, 1852-1923 | 6 |
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