| Author | Titles | 1.
| the Robert Pope Foundation Nova Escócia (Canadá) | 1 | 2.
| Robert, Serge | 1 | 3.
| Robertet, François, 1---?-1524/30? | 1 | 4.
| Robert-Gonçalves, Mickaël, 1986- | 1 | 5.
| Robert-Houdin, Paul, 1907 - 1967 | 1 | 6.
| Roberti, Mario Mirabella | 1 | 7.
| Robertini, Marina Anzil | 3 | 8.
| Robertis, Eduardo do D. Patrício de, 1913-1988 | 1 | 9.
| Robertis, Edward Michael de, 1947- | 1 | 10.
| Roberto, F. Xavier | 2 |
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