| Author | Titles | 1.
| Claro, João Martins | 1 | 2.
| Claro, João V., pseud. | 7 | 3.
| Related author: Frias, Eduardo, 1895-1975 | 4 | 4.
| Claro, Nunes | 9 | 5.
| Claro, Rogério | 5 | 6.
| Clasen, Dirck | 1 | 7.
| Clasen, Sophronius | 1 | 8.
| Clasen, Wolfgang | 2 | 9.
| Cläser, Ludwig | 1 | 10.
| Claser, Sonja | 2 | 11.
| Classe, Gustave | 1 |
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