| Author | Titles | 1.
| Castlereach, Duncan | 1 | 2.
| Castoldi, Marina | 1 | 3.
| Castorena Y Ursua, Juan Ignacio de | 1 | 4.
| Castoriadis, Cornelius, 1922-1997 | 1 | 5.
| Castres, A. Sabatier de | 1 | 6.
| Castresana, Luis de | 1 | 7.
| Castries, Henry de | 1 | 8.
| Castrillo, Carolina F. | 6 | 9.
| Castrillo Marquez, Rafaela | 1 | 10.
| Castrim, Mário, pseud. | 4 |
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