| Author | Titles | | 1.
| Ocampo, Federico Aldo | 1 | | 2.
| Ocampo, Manuel, 1965- | 5 | | 3.
| Ocampo, Victoria | 1 | | 4.
| Ocaña, Manuel, 1966- | 1 | | 5.
| Ocaña, María Teresa | 4 | | 6.
| Ócapo, Florian de | 1 | | 7.
| Occaso, Stefano L' | 2 | | 8.
| Occelli, Marjorie | 1 | | 9.
| Occhipinti, Carlo | 3 | | 10.
| Occhipinti, Gaudenzio, 19--?- | 1 |
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