ocr: CD ZUSGS science fora a changing world National Coal Resource Assessment Geologic Assessment of Coal in the Colorado Plateau: Arizona, Colorado, New Mexico, and Utah Edited by M.A. Kirschbaum, L.N.R. Roberts,and L.R.H. Biewick Professional Paper 1625-B. Discs 1 and2 Version 1.0 2000, U.S. Department of the Interior Colorado U.S. Geological Survey Plateau
