Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1967. First edition, first printing. Hardcover. Item #38206
Color photographs and descriptive data for 50 stream channels for which roughness coefficients have been determined. 213 pages with references and index. Bound in original dark green pebbled cloth with lettering and medalion stamped in gilt. A fine and bright unworn copy.