| Autor | Títulos | | 1.
| Oman, Charles William Chadwick, Sir, 1860-1946 | 6 | | 2.
| Oman, Giovanni | 1 | | 3.
| Oman International Exhibition Centre (Muscat, Omã) | 1 | | 4.
| Oman, Ron, 1970- | 1 | | 5.
| Omar, Arthur, 1948- | 4 | | 6.
| Omar, Arthur, 1948- | 1 | | 7.
| Omar Khayyam, ca 1044-1123 | 15 | | 8.
| Omar-Kheyyam, -1214 | 1 | | 9.
| Omaswa, Francis | 1 | | 10.
| Ombler, Gary | 1 |
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