| Author | Titles | | 1.
| Octavio Picón, Jacinto | 2 | | 2.
| Octavio, Rodrigo | 1 | | 3.
| Ocupart-arte em espaços improváveis (Lisboa, Portugal) | 1 | | 4.
| Odarte, Filipe, 1450-1536 | 0 | | 5.
| Author is: Hodart, Philippe, 1450-1534 | 2 | | 6.
| Oddestert, Frank den | 1 | | 7.
| Oddo, Eva, 1980- | 5 | | 8.
| Oddó, Víctor | 2 | | 9.
| Oddo+Lopez Architetti | 1 | | 10.
| Oddon, Marcel | 2 | | 11.
| Oddon, Yvonne | 1 |
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