SHORTER CONTRIBUTIONS TO GENERAL GEOLOGY 1920; GEOLOGICAL SURVEY PROFESSIONAL PAPER 128
Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1921. Soft cover. Collects seven papers with maps, photographs, illustrated plates, foldout charts, and index. Bounnd in gray thick paper covers printed in black. Covers moderately toned. A very good plus copy. More