| Author | Titles | | 1.
| Rasmussen, Steen Eiler, 1898-1990 | 3 | | 2.
| Rasmussen, Waldo | 2 | | 3.
| Rasmussen, William M. S. | 1 | | 4.
| Raspail, Thierry | 6 | | 5.
| Rasponi, Simonetta | 1 | | 6.
| Rasquilho, Francisco Vieira | 1 | | 7.
| Rasquilho, Rui | 11 | | 8.
| Rasquinho, Francisco Vieira | 1 | | 9.
| Rassam, Jean-Pierre | 1 | | 10.
| Rasse, Paul | 1 |
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