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1by Williams, Barbara C.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1996
Government Document Microform Book -
2Published 1996“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Microform Book -
3by Kirschner, Frederick E.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1996
Government Document Microform Book -
4by Moore, Bruce W.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1996
Government Document Microform Book -
5by Peters, Douglas C.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1996
Government Document Microform Book