| Autor | Títulos | | 1.
| Organization for European Economic Co-Operation, Paris | 1 | | 2.
| Organizing Committee of the UIA Barcelona 96 | 1 | | 3.
| Orgasmo Carlos (nome de artista) | 0 | | 4.
| Ver: Vieira, Manuel João, 1962- | 28 | | 5.
| Orgaz, Manuel | 1 | | 6.
| Orgeix, Emilie d' | 1 | | 7.
| Orgel, Stephen | 1 | | 8.
| Orgogozo, Chantal | 2 | | 9.
| Oriales, Angel | 1 | | 10.
| Oriano, Michel | 1 | | 11.
| Orico, Osvaldo, 1900-1981 | 9 |
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