| Author | Titles | | 1.
| RNA Foundation (Rússia) | 1 | | 2.
| Ro To Architects (Firma de Arquitectura) | 0 | | 3.
| Author is: RoTo Architects (Firma de Arquitectura) | 4 | | 4.
| Roa, Ryan | 2 | | 5.
| Roach, Damien, 1980- | 1 | | 6.
| Roaf, Caroline | 1 | | 7.
| Roaf, Michael | 1 | | 8.
| Roalf, Peggy | 1 | | 9.
| Roani, Roberta | 1 | | 10.
| Roas, Marlene Dias, 1956- | 0 | | 11.
| Author is: Rosa, Marlene, 1956- | 1 | | 12.
| Roault, Georges, 1871-1958 | 1 |
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