| Author | Titles | | 1.
| Armstrong, Walter, Sir, 1850-1918 | 7 | | 2.
| Armstrong-Jones, Antony, 1930-2017 | 0 | | 3.
| Author is: Snowdon, Conde de, 1930-2017 | 2 | | 4.
| Armstrong-Jones, Antony Charles Robert, Conde de Snowdon 1930-2017 | 0 | | 5.
| Author is: Snowdon, Conde de, 1930-2017 | 2 | | 6.
| Armstrong-Jones, Tony, 1930-2017 | 0 | | 7.
| Author is: Snowdon, Conde de, 1930-2017 | 2 | | 8.
| Armtrong-Jones, Antony Charles Robert, 1930-2017 | 0 | | 9.
| Author is: Snowdon, Conde de, 1930-2017 | 2 | | 10.
| Arnaboldi, Mario Antonio, 1932- | 139 | | 11.
| Arnáez, Esmeralda | 2 | | 12.
| Arnaez, Estrella | 1 | | 13.
| Arnáez, Rocio | 1 | | 14.
| Arnaiz, Doroteo | 1 |
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