| Author | Titles | | 1.
| Acquaviva, Fréderic | 1 | | 2.
| Acquier, Jean-Louis | 1 | | 3.
| L' Acropole Rouge (Amadora, Portugal) | 1 | | 4.
| Acta Médica Portuguesa | 2 | | 5.
| Actes du Colloque, Tours, 1983 | 1 | | 6.
| Activa | 1 | | 7.
| Acton, David, 1953- | 3 | | 8.
| Acton, Harold | 1 | | 9.
| Acton, Mary | 1 | | 10.
| Acuña Castroviejo, Fernando | 3 |
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