| Author | Titles | | 1.
| Siqueira, Nuno de, 1929-2007 | 46 | | 2.
| Siqueira, Nuno José de, 1929-2007 | 0 | | 3.
| Author is: Siqueira, Nuno de, 1929-2007 | 46 | | 4.
| Siqueira, Nuno José Maria da Purificação de, 1929-2007 | 0 | | 5.
| Author is: Siqueira, Nuno de, 1929-2007 | 46 | | 6.
| Siqueira, Vera Beatriz | 1 | | 7.
| Siquier, J. | 1 | | 8.
| Siquier, Pérez, 1930-2021 | 0 | | 9.
| Author is: Pérez Siquier, Carlos, 1930-2021 | 3 | | 10.
| Sir Leslie Martin, 1908-2000 | 0 | | 11.
| Author is: Martin, Leslie, 1908-2000 | 14 | | 12.
| Sir, Libor | 1 | | 13.
| Siragusa, Santino | 5 | | 14.
| Sirani, Elisabetta, 1638-1665 | 1 |
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