Long-lived magmatic phases at Los Azufres volcanic center, Mexico Pradal, E. /Robin, Claude VOLCANISME VOLCAN TERTIAIRE QUATERNAIRE GEOLOGIE STRUCTURALE GEOLOGIE REGIONALE STRATIGRAPHIE ROCHE VOLCANIQUE DIFFERENTIATION MAGMATIQUE CALDERA 1994 text https://www.documentation.ird.fr/hor/fdi:42466 fdi:42466 Pradal E., Robin Claude. Long-lived magmatic phases at Los Azufres volcanic center, Mexico. 1994, 63 (3-4), 201-215 EN MEXIQUE