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Displaying 1-1 of 1 results for author "Dwyer, David L."
Effects of abandoned multiple seam workings on a longwall in Virginia / by Gregory J. Chekan, Rudy J. Matetic, and David L. Dwyer.
- Text
- [Washington, D.C. (2401 E St., NW, MS #9800, Washington, 20241) : U.S. Dept. of the Interior, Bureau of Mines, 1989]
- 1989
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