| Author | Titles | | 1.
| Ainsbury, Christopher J. | 2 | | 2.
| Ainsworth, Maryan Wynn | 10 | | 3.
| Ainsworth, William, 1807-1896 | 3 | | 4.
| Ainsworth, William Francis, 1807-1896 | 0 | | 5.
| Author is: Ainsworth, William, 1807-1896 | 3 | | 6.
| Ainsworth, William Harrison, 1805-1882 | 3 | | 7.
| AIP - Associação Industrial Portuense (Porto, Portugal) | 1 | | 8.
| AIP - Associação Industrial Portuguesa (Lisboa, Portugal) | 6 | | 9.
| Airaghi, Piero | 1 | | 10.
| Airas de Santiago, Joan | 1 | | 11.
| Airaud, Bruno | 1 |
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