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1by De Rosa, Maria I.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1992
Government Document Microform Book -
2by Morrow, G. S. (Gerald S.)“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1992
Government Document Microform Book -
3by Conti, Ronald S.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1992
Government Document Microform Book -
4by Conti, Ronald S.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1995
Government Document Microform Book