| Author | Titles | | 1.
| Zuazagoitia, Joaquín de | 1 | | 2.
| Zuaznabar, Gillermo, 1971- | 1 | | 3.
| Zuba, Elizabeth | 2 | | 4.
| Zubero Apodaca, Begoña, 1962- | 1 | | 5.
| Zubero, Begona, 1962- | 2 | | 6.
| Zubiaurre, Antonio de | 3 | | 7.
| Zubic, Ana | 2 | | 8.
| Zubillaga (Firma) | 1 | | 9.
| Zubinao, Javier | 1 | | 10.
| Zubiri, Xan | 1 |
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