| Author | Titles | | 1.
| Ruiz Olabuénaga, José Ignacio, 1929-2014 | 1 | | 2.
| Ruiz, Pablo, 1881-1973 | 0 | | 3.
| Author is: Picasso, Pablo, 1881-1973 | 160 | | 4.
| Ruiz, Pedro | 3 | | 5.
| Ruiz Pérez, Pedro | 1 | | 6.
| Ruiz Pipó, Manolo, 1929- | 1 | | 7.
| Ruiz Planes, Tomás | 1 | | 8.
| Ruíz, Roberto | 3 | | 9.
| Ruiz Ruiz, Luis | 1 | | 10.
| Ruiz Ruiz, Luiz | 4 | | 11.
| Ruiz Serrano, Catalina | 1 |
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