| Author | Titles | | 1.
| Ojanguren Areces, Antonio | 1 | | 2.
| Ojari, Triin | 1 | | 3.
| Ojeda, Pino | 1 | | 4.
| Ojeikere, J. D. 'Okhai, 1930- | 1 | | 5.
| Ojêres, Rutra | 1 | | 6.
| Ojetti, Paola | 1 | | 7.
| Ojetti, Ugo, 1871-1946 | 4 | | 8.
| Ojukwu | 1 | | 9.
| O.K Center for Contemporary Art (Áustria) | 1 | | 10.
| O.K. Centrum für Gegenwartskunst (Linz, Áustria) | 1 |
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