HISTORICAL UNREST AT LARGE CALDERAS OF THE WORLD, VOLUME 1 & 2; GEOLOGICAL SURVEY BULLETIN 1855
Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1988. Soft cover. A total of 1108 pages with a plethora of maps, graphs, tables, charts, illustrations, seismographs, locations, etc. Bound in original tan stiff paper covers printed in brown. A fine, as new, unused two volume set. More