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Displaying 1-2 of 2 results for author "United States. Bureau of Mines. Branch of Procurement."
High angle mining system [microform].
- Text
- Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, [1983]
- 1983
Neutralization of acid mine drainage influenced by organic additions [microform] / Richard B. Brugam ... [et al.].
- Text
- [Washington, DC] : Bureau of Mines, U.S. Dept. of the Interior, [1991]
- 1991
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