Labels:text | poster | screenshot | billboard | sign OCR: CD USGS science for a changing world National Coal Resource Assessment 1999 Resource Assessment of Selected Tertiary Coal Beds and Zones in the Northern Rocky Mountains and Great Plains Region By Fort Union Coal Assessment Team Professional Paper 1625-A Discs 1 and 2 Version 1.2 1999 U.S. Department of the Interior Rocky Mountains U.S. Geological Survey and Great Plains
