References Cited

Meyer-Abich, H., Los Volcanes Activos do Guatemala y El Salvador, Anales Serv. G eol. Nacl. El Salvador Bd.,3, 49-62, 1956.

Mooser, F., H. Meyer-Abich, and A. R. McBirney, Catalogue of the Active Volcanoe s of the World, Part 6, Central America, International Volcanological Associatio n, Naples, 1958.

Simkin, Tom and Siebert, Lee, 1994. Volcanoes of the World. Geoscience Press, Inc., Tucson, Arizona, p133-134.

West, R.C., and Augelli, J.P. Middle America: It's Lands and Peoples. Prentice Hall: New Jersey, 1966.

Williams, H., and H. Meyer-Abich, Volcanism in the Southern Part of El Salvador With Particular Reference to the Collapse basins of Lakes Coatepeque and Ilopang o, Univ. Calif. Publ. Geol. Sci., vol 32, 1-64, 1955