| Author | Titles | | 1.
| Olivetti, Alberto | 1 | | 2.
| Olivetti, Armando | 8 | | 3.
| Olivié, Jean-Luc | 4 | | 4.
| Olivier, Alain | 1 | | 5.
| Olivier, Alice Scarpa | 1 | | 6.
| Olivier Barceló, Carles | 1 | | 7.
| Olivier, de Gand, 1470-1512 | 4 | | 8.
| Olivier, de Gand, 1470-1512 | 1 | | 9.
| Olivier, Fernande | 1 | | 10.
| Olivier, G. A., 1756-1814 | 1 |
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