Nota bibliográfica sobre los libros impresos en Bilbao por Matías Mares

Matías Seas was a printer in Bilbao in the 16th century. It seems that he settled in Bilbao in 1577 or 1578, where he stayed until 1587. The author provides the bibliography of the books that he printed during his stay in Bilbao. The author also describes these books and informs on where some of the copies can be found today