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2. Structure and bathymetry of western end of the Bartlett Trough, Caribbean Sea;Banks,1969
3. Mapa geologico de la Republica de Guatemala (1st ed;Bonis,1970
4. Age of pumice deposits in Guatemala;Bonis;Geol. Soc. Am. Bull.,1966
5. Bosc, E. 1971. Geology of the San Augustín Acasaquastlán Quadrangle, East Central Guatemala. Ph.D dissertation, Rice Univ. Houston, 131 pp.