The 1963-65 eruption of Irazu Volcano, Costa Rica: the period of March 1963 to October 1964 - Murata, K. J. (Napoli Italy : F Giannini, 1966)
Separata de "Bulletin volcanologique", t. 29. 1966, p.765-796.
Keywords: VOLCAN IRAZU (COSTA RICA)