Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1969. Soft cover. Item #48595
A study of the southern part of the San Andres Mountinas, with emphasis on Paleozoic stratigraphy. 46 pages with maps, tables, photographs, sections, and references, plus the folded map plate in the rear pocket. Bound in gray stiff paper covers printed in black. Sunning along the cover edges, else a fine copy.