Coal-quality information--key to the efficient and environmentally sound use of coal.
Contributors: Geological Survey (U.S.)
Series: USGS fact sheet -- FS 171-97.; U.S. Geological Survey fact sheet -- FS-97-171.
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey
Published: 1997
Place of publication: [Reston, Va
Language: eng
Subjects: Coal -- Environmental aspects -- United States.
Other titles: Coal quality information--key to the efficient and environmentally sound use of coal.
Notes: Shipping list no.: 98-0147-P.