Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1952. Softcover. Item #43990
179 pages with photographic plates, foldouts, tables, maps and index. All plates present, including the two folded maps in the rear pocket. Bound in original gray stiff paper covers with printing in black. Owner's name stamp on the front cover. Upper corner bumped. Several corner creases. A very good copy.