| Author | Titles | 1.
| Castro, Adelino Lyon de, 1910-1953 | 2 | 2.
| Castro, Adolfo de | 4 | 3.
| Castro, Adolfo Faria de, 1904-1955 | 3 | 4.
| Castro, Afonso de, 1897-1959 | 1 | 5.
| Castro, Agostinho Vasco da Rocha e, 1935-2021 | 0 | 6.
| Author is: Vasco, 1935-2021 | 25 | 7.
| Castro, Aida, 1979- | 6 | 8.
| Castro, Aida Estela, 1979- | 0 | 9.
| Author is: Castro, Aida, 1979- | 6 | 10.
| Castro, Alba de | 1 | 11.
| Castro, Alberto Osório de, 1868-1946 | 9 | 12.
| Castro, Alexandra | 3 |
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