Machado, Frederico, org.2018-12-032018-12-031982-07MACHADO, Frederico (1982). Preface. "Arquipélago. Série Ciências da Natureza", 3: 11-12.http://hdl.handle.net/10400.3/4925International Symposium on the Activity of Oceanic Volcanoes. Ponta Delgada, 4-9 August 1980.This Symposium was held at the Azores University, in Ponta Delgada, from 4 to 9 August, 1980. […].engPrefaceSymposiumjournal article