| Author | Titles | | 1.
| Aguirre, Juan Antonio | 2 | | 2.
| Aguirre, Mariana | 1 | | 3.
| Aguirre, Mariona | 1 | | 4.
| Aguirre, Miguel Ángel | 1 | | 5.
| Aguirre, Pablo | 1 | | 6.
| Aguirre, Peio | 9 | | 7.
| Aguirre, Ramón | 1 | | 8.
| Aguirre y Ortiz de Zárate, Jesús | 1 | | 9.
| Aguirre y Respaldiza, Andrés | 2 | | 10.
| Aguirregoitia Arechavaleta, Antón | 1 |
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