| Author | Titles | | 1.
| Castro, Miguel de Melo e | 3 | | 2.
| Castro, Miguel Lúcio Francisco de Portugal e | 1 | | 3.
| Castro, Miguel Osório de, 1905-1967 | 1 | | 4.
| Castro, Moacir Werneck de | 8 | | 5.
| Castro Morales, Federico | 5 | | 6.
| Castro Neves, Rita, 1971- | 0 | | 7.
| Author is: Neves, Rita Castro, 1971- | 13 | | 8.
| Castro, Nuno | 2 | | 9.
| Castro, Nuno Àlvares Pereira de | 2 | | 10.
| Castro, Pablo de | 1 | | 11.
| Castro, Patricio Ricketts Rey de | 1 |
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