| Author | Titles | 1.
| Roebuck, J.A. | 1 | 2.
| Roeck, Bernd | 1 | 3.
| Roed, Kjetil | 2 | 4.
| Roeder, Günther | 1 | 5.
| Roediger, David | 1 | 6.
| Roedrich, Nicolas de | 1 | 7.
| Roegiers, Patrick | 9 | 8.
| Roehampton Institute (Londres, Grã-Bretanha) | 1 | 9.
| Roehrig, Catharine H. | 1 | 10.
| Roelandt, Els | 2 |
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