Acceso usuarios
Itziar Laka Mugarza 
It can be said, without fear of exaggeration, that Manuel Arriandiaga was one of the principal theorists and leaders of the purists who made up the so-called �School of Arana�, particularly where verbal morphology was concerned.
We show here that Arriandiaga was Azkue's most faithful disciple, and the most fervent admirer of the latter's Euskal Izkindea (Basque Grammar), whose plans and ideas he attempted to take to their logical conclusions. So, whilst the author who gave his name to the �School of Arana� provided it with ideas and tendencies related to vocabulary and phonetics, it was rather Azkue's work which came to be the School's primary source in matters related to its central and characteristic field of verbal morphology.
We publish in the form of an appendix the letters written by Arriandiaga to Azkue, in which their disciple-master relationship, so evident in the former's writings, is especially marked.
