| Author | Titles | 1.
| Roelens, Nathalie | 1 | 2.
| Röell, D. C. | 7 | 3.
| Roelli, B. M. | 1 | 4.
| Roelofs, Pieter | 2 | 5.
| Roels, Hans | 1 | 6.
| Roels Jr, Reynaldo | 10 | 7.
| Roelstraete, Dieter, 1972- | 5 | 8.
| Roemans, Rob. | 1 | 9.
| Roemer, Alex | 1 | 10.
| Roemer-und Pelizaeus-Museum ( (Hildesheim, Alemanha) | 1 |
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