by Geoffrey S. Plumlee ... [and others] ; prepared by the U.S. Geological Survey and the Colorado Geological Survey in cooperation with the U.S. Bureau of Land Management
by L.R. Kister ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Arizona State Land Department
Timothy D. McCobb ... [and others] ; U.S. Department of the Interior, U.S. Geological Survey ; in cooperation with the Air Force Center for Engineering and the Environment