| Author | Titles | | 1.
| Ortínez, Luisa | 1 | | 2.
| Ortiz, Aitor | 1 | | 3.
| Ortiz, Aitor, 1971- | 6 | | 4.
| Ortiz, Alberto | 1 | | 5.
| Ortiz Alonso, Enrique, 1934- | 1 | | 6.
| Ortiz Armengol, Pedro | 1 | | 7.
| Ortiz Berrocal, Miguel, 1933-2006 | 0 | | 8.
| Author is: Berrocal, 1933-2006 | 1 | | 9.
| Ortiz, Carme | 2 | | 10.
| Ortiz, Concha | 1 | | 11.
| Ortiz de Elgea, Carmelo, 1963-2016 | 1 |
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