A contribution to the petrogenesis of Osorno and Calbuco volcanoes, Southern Andes, 41°00'-41°30' : comparative study. - Autor: Lopez E., Leopoldo; Parada R., Miguel A.; Moreno R., Hugo; Frey, Fred A; Hickey-Vargas, Rosemary L -Palabra Clave: PETROGENESIS; VOLCANISMO; GEOQUIMICA; BSN007893