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 Belinda F. Arbogast ... [and others] ; prepared in cooperation with the Colorado Geological Survey for the United States Department of Agriculture Forest Service
Department of the Interior, U.S. Geological Survey ; by Ronald C. Johnson ; prepared in cooperation with the Utah Geological and Mineral Survey and the Colorado Geological Survey
Date
1989
Series
Miscellaneous investigations series (Geological Survey (U.S.)) ; I-1974