| Autor | Títulos | 1.
| Obregón, Gonzalo, 1916- | 1 | 2.
| Obregon Valverde, Enrique | 1 | 3.
| O'Brennan, John | 0 | 4.
| Ver: O'Brennan, John, 1969- | 1 | 5.
| O'Brennan, John, 1969- | 1 | 6.
| O'Brien | 1 | 7.
| O'Brien, C. | 0 | 8.
| Ver: O'Brien, Charlotte | 2 | 9.
| O'Brien, Charlotte | 2 | 10.
| O'Brien, Charlotte Rachel | 0 | 11.
| Ver: O'Brien, Charlotte | 2 | 12.
| O'Brien, Fernanda | 1 | 13.
| O'Brien, Jacqueline | 1 |
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