| Author | Titles | | 1.
| Activa | 1 | | 2.
| Acton, David, 1953- | 3 | | 3.
| Acton, Harold | 1 | | 4.
| Acton, Mary | 1 | | 5.
| Acuña Castroviejo, Fernando | 3 | | 6.
| Acuña, Xoán | 1 | | 7.
| Acuña, Xosé Enrique | 1 | | 8.
| ADA, 1909-1972 | 0 | | 9.
| Author is: Almeida, Álvaro Duarte de, 1909-1972 | 20 | | 10.
| ADA, 1909-1972 | 0 | | 11.
| Author is: Almeida, Álvaro Duarte de, 1909-1972 | 1 | | 12.
| ADACE - Asociación de Directores de Arte Contemporáneo de España | 1 |
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