| Author | Titles | | 1.
| Astengo, Corradino | 1 | | 2.
| Astengo, Domenico | 1 | | 3.
| Astengo, Giovanni | 1 | | 4.
| Aster, E. von | 1 | | 5.
| Aster, Ernst von, 1778-1855 | 1 | | 6.
| Aster, Paul | 1 | | 7.
| Asthoff, Jens | 5 | | 8.
| Asthoff, Jens ; Chassey, Eric de ; Sausset, Damien | 1 | | 9.
| Asti, Sergio | 1 | | 10.
| Astiàrraga, Carlos | 2 |
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