| Author | Titles | | 1.
| Castelão, João 1963- | 1 | | 2.
| Castelar, Emílio, 1832-1899 | 5 | | 3.
| Castelar y Ripoll, Emilio | 1 | | 4.
| Castelberg, Carlos | 2 | | 5.
| Castel-Branco, Ana | 1 | | 6.
| Castel-Branco, Carlos Nuno | 2 | | 7.
| Castel-Branco, Catarina, 1956- | 22 | | 8.
| Castel-Branco, Catarina Maria Tamagnini Ataíde, 1956- | 0 | | 9.
| Author is: Castel-Branco, Catarina, 1956- | 22 | | 10.
| Castel-Branco, Cristina | 17 | | 11.
| Castel-Branco, Dorita de, 1936-1996 | 16 |
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