by S.G. Robson ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Colorado Department of Natural Resources, Division of Water Resources, Office of the State Engineer ... [and others]
by Robert L. Melvin ... [and others] ; [manuscript preparation and editing by, Jennifer A. VanLoon] ; prepared in cooperation with the U.S. Environmental Protection Agency
Department of the Interior, United States Geological Survey ; by E.E. Gann ... [and others] ; Department of the Interior, United States Geological Survey. ; prepared in cooperation with the Missouri Geological Survey and Water Resources