| Author | Titles | 1.
| Outram, Dorinda | 1 | 2.
| Outred, Francis | 1 | 3.
| Outtier, Bernard | 1 | 4.
| Ouvaliev, Peter Christoff, 1915-1998 | 0 | 5.
| Author is: Rouve, Pierre, 1915-1998 | 3 | 6.
| Ouvrard, Nicole | 2 | 7.
| Ouvrieu, Lorraine | 1 | 8.
| Ouyang Caiwei | 1 | 9.
| Ouzman, Sven | 1 | 10.
| Ovar. Câmara Municipal | 9 | 11.
| Ovar. Câmara Municipal. Centro de Arte. Galeria | 2 |
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