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Volcanism in the Southern Part of El Salvador, with Particular Reference to the Collapse Basins of Lakes Coatepeque and Ilopango, by Howel Williams and Helmut Meyer-Abich

Howel WilliamsHelmut Meyer-Abich

出版	University of California Press, 1955
URL	http://books.google.com.hk/books?id=4HiKngEACAAJ&hl=&source=gbs_api