| Author | Titles | | 1.
| Roani, Roberta | 1 | | 2.
| Roas, Marlene Dias, 1956- | 0 | | 3.
| Author is: Rosa, Marlene, 1956- | 1 | | 4.
| Roault, Georges, 1871-1958 | 1 | | 5.
| Robacker, Earl F. | 1 | | 6.
| Robakowski, Józef, 1939- | 2 | | 7.
| Robalis | 1 | | 8.
| Roballo, Fernando | 1 | | 9.
| Robalo, Alice, 1925- | 1 | | 10.
| Robalo, Cristina, 1969- | 10 | | 11.
| Robalo, Gonçalo | 1 |
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