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monografia Rebiun26052234 https://catalogo.rebiun.org/rebiun/record/Rebiun26052234 m o d cr un||||a|a|| 190214s1997 vauab o f000 0 eng d UPVA 998318601103706 OCLCE eng pn OCLCE OCLCQ n-us--- Coal-quality information--key to the efficient and environmentally sound use of coal At head of title USGS, science for a changing world [Reston, VA] U.S. Dept. of the Interior, U.S. Geological Survey [1997] [Reston, VA] [Reston, VA] U.S. Dept. of the Interior, U.S. Geological Survey 1 online resource (1 sheet) illustrations (some color), map 1 online resource (1 sheet) Text txt rdacontent computer c rdamedia online resource cr rdacarrier USGS fact sheet FS 171-97 "October 1997." Shipping list no.: 98-0147-P Coal- Environmental aspects- United States Coal- Environmental aspects. Estados Unidos Geological Survey (U.S.) Print version Coal-quality information--key to the efficient and environmentally sound use of coal. [Reston, VA] : U.S. Dept. of the Interior, U.S. Geological Survey, [1997] (OCoLC)38576717 Fact sheet (Geological Survey (U.S.)) FS-97-171