| Author | Titles | | 1.
| Rubira, Claret | 1 | | 2.
| Rubira Gutiérrez, Sergio, 1975- | 0 | | 3.
| Author is: Rubira, Sergio, 1975- | 44 | | 4.
| Rubira, Sergio, 1975- | 44 | | 5.
| Rubruk, Guglielmo di, 1220-1293 | 1 | | 6.
| Rubsamen, Gisela | 1 | | 7.
| Rubsamen Glen, 1957- | 2 | | 8.
| Ruby, Andreas | 3 | | 9.
| Ruby, Ilka | 1 | | 10.
| Ruby, Jay | 1 | | 11.
| Rucabado Verdaguer, Juan E. | 1 |
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