| Author | Titles | | 1.
| Trigueiros, Luís Forjaz, 1915-2000 | 86 | | 2.
| Trigueiros, Maria Filomena | 1 | | 3.
| Trigueiros, Maria Luisa Neto | 1 | | 4.
| Trigueiros, Miguel, 1918-1999 | 9 | | 5.
| Triki, Hamid | 1 | | 6.
| Trilho, Sílvia | 1 | | 7.
| Trillat, Jean Jacques | 1 | | 8.
| Trillat, Raymond | 1 | | 9.
| Trilling, James | 1 | | 10.
| Trillo, Miguel, 1953- | 4 |
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