| Author | Titles | | 1.
| Riand, Jeff | 1 | | 2.
| Riani, Paolo, 1937- | 1 | | 3.
| Riaño, José María | 1 | | 4.
| Riaño, Peio H. | 1 | | 5.
| Riat, Georges, 1870?-1905 | 1 | | 6.
| Riáusova, Helena | 1 | | 7.
| RIBA | 0 | | 8.
| Author is: Royal Institute of British Architects | 8 | | 9.
| Riba, Carlos | 4 | | 10.
| Riba d'Ave, António, pseud. | 0 | | 11.
| Author is: Cruz, António, 1911-1989 | 59 | | 12.
| Riba Tamega, V. de | 1 |
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