He also translated the Spanish version of Levi-Provencal's history of Muslim Spain from 711 to 1031, and wrote the prologue commenting on the role of the Muslim period in Spanish history.
He also translated the two volumes of the Spanish version of Levi-Provencal's history of Muslim Spain from 711 to 1031. In the first volume, he wrote the prologue commenting on the role of the Muslim period in Spanish history.