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Estimate of Known Recoverable Reserves of Coking Coal in Westmoreland County, Pa
Carlton Ernest Brown
Gordon D. Bath
James J. Dowd
Louis Chanborn Brichta
Oscar Carl Blade
Stuart Robert Brinkley
United States. Bureau of Mines
William H. Lyon
Bernard Lewis
Donald S. Colby
Morris Fisher
Simeon A. Allen
Florence Feicht Boyer
出版
U.S. Department of the Interior, Bureau of Mines
, 1951
URL
http://books.google.com.hk/books?id=ox5azgEACAAJ&hl=&source=gbs_api