| Author | Titles | | 1.
| Omcikus, Marko | 1 | | 2.
| Omega, pseud. | 0 | | 3.
| Author is: Sousa, Eduardo Alfredo de, 1865-1927 | 3 | | 4.
| Omer, Mordechai | 5 | | 5.
| Omer, Mordehäi | 1 | | 6.
| Omero, ca 850 a.C.-? | 0 | | 7.
| Author is: Homero, ca 850 a.C.- ? | 25 | | 8.
| Omerod, Sue | 1 | | 9.
| Omerston, James | 1 | | 10.
| Omes, Nikki Zoë, 1995- | 1 | | 11.
| Omessa, Ch. | 1 | | 12.
| Omessa, Henri | 1 |
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