| Author | Titles | | 1.
| Ohtake, Tomie, 1913-2015 | 1 | | 2.
| Ohtani, Kumi | 1 | | 3.
| OIC Research Centre for Islamic History Art and Culture | 1 | | 4.
| Oidtmann, Heinrich | 1 | | 5.
| Oikonomides, Al. N. | 1 | | 6.
| Oiticica Filho, César, 1968- | 1 | | 7.
| Oiticica, Hélio, 1937-1980 | 11 | | 8.
| Oiticica, Hélio, 1937-1980 | 1 | | 9.
| Oiveira Apto de | 1 | | 10.
| Oiwa, Oscar, 1965- | 1 |
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