Geological Survey (U.S.) & National Coal Resource Assessment (U.S.). (2001). 2000 resource assessment of selected coal beds and zones in the Northern and Central Appalachian Basin coal regions (Version 1.0.). U.S. Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and National Coal Resource Assessment (U.S.). 2000 Resource Assessment of Selected Coal Beds and Zones in the Northern and Central Appalachian Basin Coal Regions. Version 1.0. [Reston, Va.]: U.S. Geological Survey, 2001.
MLA (9th ed.) CitationGeological Survey (U.S.) and National Coal Resource Assessment (U.S.). 2000 Resource Assessment of Selected Coal Beds and Zones in the Northern and Central Appalachian Basin Coal Regions. Version 1.0. U.S. Geological Survey, 2001.
Warning: These citations may not always be 100% accurate.