| Author | Titles | | 1.
| Frada, João José Cúcio | 1 | | 2.
| Fradadocchi, Tommaso Breccia | 1 | | 3.
| Frade, F. | 1 | | 4.
| Frade, Fernando | 2 | | 5.
| Frade, João Rui, 1952- | 1 | | 6.
| Frade, José | 6 | | 7.
| Frade, José Maria, 1961- | 2 | | 8.
| Frade, Maria João | 4 | | 9.
| Frade, Pedro Miguel, 1960-1992 | 12 | | 10.
| Fradier, Georges | 2 |
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