Surface Waters of Hudson Bay, Upper Mississippi, Missouri River Basins, 1950, Parts 5 & 6

Surface Waters of Hudson Bay, Upper Mississippi, Missouri River Basins, 1950, Parts 5 & 6, (WSP-1187), 478 pp., 6" x 9". The quality-of-water investigations of the United States Geological Survey are concerned with chemical and physical characteristics of the surface and ground water supplies of the Nation.ÊÊ Available as a B & W copy only.ÊÊ Please allow time for production.