| Author | Titles | | 1.
| Gérando, J. M. de, 1772-1842 | 1 | | 2.
| GERAP - Estudos, Planeamento e Projectos, Lda. (Firma) | 1 | | 3.
| Gerard | 2 | | 4.
| Gérard, Auguste, 1852-1922 | 1 | | 5.
| Gerard Byrne, 1969- | 0 | | 6.
| Author is: Byrne, Gerard, 1969- | 9 | | 7.
| Gérard, Claude | 1 | | 8.
| Gérard, Édouard | 1 | | 9.
| Gerard, F., fl.1853-1863 | 1 | | 10.
| Gerard, F., fl.1861 | 1 | | 11.
| Gerard, fl.1861 | 1 |
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