| Author | Titles | | 1.
| Gallut-Frizeau, Anne | 1 | | 2.
| Galluzzi, Paolo | 2 | | 3.
| Gallwitz, Klaus | 10 | | 4.
| Galmot, Alexis | 1 | | 5.
| Galo, Ivânea de Mendonça | 1 | | 6.
| Galopim, Nuno | 1 | | 7.
| Galopin, Arnould | 2 | | 8.
| Gálos, Miklós | 2 | | 9.
| Galowitz, Cara | 5 | | 10.
| GALP - Gabinete de Urbanismo, Arquitectura & Engenharia, Lda. | 1 | | 11.
| Related author: Loureiro, José Carlos, 1925- | 19 | | 12.
| Related author: Ramos, Pádua, 1931-2005 | 13 |
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