| Author | Titles | | 1.
| Roskis, Edgar | 1 | | 2.
| Rosler, Martha | 1 | | 3.
| Rosler, Martha, 1943- | 9 | | 4.
| Roslin, Alexandre, 1718-1793 | 1 | | 5.
| Rosmaninho, Alberto | 1 | | 6.
| Rosmaninho, João | 1 | | 7.
| Rosmaninho, Nuno | 4 | | 8.
| Rosmaninho, Nuno, 1964- | 2 | | 9.
| Rosnay, Joël de | 2 | | 10.
| Rosner, Carl | 1 |
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