| Author | Titles | | 1.
| Otero, Luis Soledade | 1 | | 2.
| Otero, Manuel, 1921- | 1 | | 3.
| Otero, Mayumi, 1985- | 2 | | 4.
| Otero Pedrayo, Ramón, 1888-1976 | 4 | | 5.
| Otero, Roberto | 2 | | 6.
| Otero Tovar, Olga | 2 | | 7.
| Otero Tuñez, Ramón | 6 | | 8.
| Otero-Yglesias, Jesús, 1963- | 1 | | 9.
| Othenin-Girard, Madeleine | 1 | | 10.
| Othman, Charlotte | 1 |
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