| Author | Titles | | 1.
| Arrhenius, Svante, 1859-1927 | 3 | | 2.
| Arriaga, Gardy de, 1915- | 2 | | 3.
| Arriaga, Iria | 1 | | 4.
| Arriaga, José de, 1848-1921 | 5 | | 5.
| Arriaga, Manuel de, 1840-1917 | 8 | | 6.
| Arriaga, Miguel Street de | 1 | | 7.
| Arriaga, Noël de, 1918-1993 | 12 | | 8.
| Arriaga, Visconde de | 1 | | 9.
| Arriazu Aranceta, Ana | 1 | | 10.
| Arriba Guerri, Mercedes López | 2 |
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