| Author | Titles | | 1.
| Oiticica Filho, César, 1968- | 1 | | 2.
| Oiticica, Hélio, 1937-1980 | 11 | | 3.
| Oiticica, Hélio, 1937-1980 | 1 | | 4.
| Oiveira Apto de | 1 | | 5.
| Oiwa, Oscar, 1965- | 1 | | 6.
| Oiza, Jaime | 1 | | 7.
| Ojala, Esa | 1 | | 8.
| Ojalvo, David | 2 | | 9.
| Ojanguren Areces, Antonio | 1 | | 10.
| Ojari, Triin | 1 |
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