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
geology by L.C. Conant [and others] ; prepared [by the United Geological Survey] with the cooperation of the Geological Survey of Alabama, and the Department of Geology, University of Alabama