| Author | Titles | | 1.
| Ateneu Comercial do Porto | 19 | | 2.
| Ateneu Popular de Montijo | 3 | | 3.
| Ateneu popular (Lisboa, Portugal) | 1 | | 4.
| Ateneum Art Museum (Helsinquia, Finlândia) | 6 | | 5.
| Ateneum, Helsingfors) | 1 | | 6.
| Aterido, Ángel | 1 | | 7.
| Aterido Fernández, Angel | 1 | | 8.
| Atget, Eugène, 1857-1927 | 11 | | 9.
| Atget, Jean Eugène Auguste, 1857-1927 | 0 | | 10.
| Author is: Atget, Eugène, 1857-1927 | 11 | | 11.
| Atha, Christine | 1 |
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