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41“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
42“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
43by Atkinson, Charles H.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1975
Government Document Book -
44by Miller, Kenneth J.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1975
Government Document Book -
45by Moore, B. J. (Billy J.)“...U.S. Dept. of the Interior, Bureau of Mines :...”
Published 1975
Government Document Book -
46by Bottge, Robert G.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1975
Government Document Book -
47Published 1975“...U.S. Dept. of Interior, Bureau of Mines,...”
Government Document Book -
48by Phillips, Thomas A.“...U.S. Dept. of Interior, Bureau of Mines,...”
Published 1976
Government Document Book -
49“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
50“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
51Published 1976“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
52“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
53by Hunter, W. L. (Willard L.)“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1976
Government Document Book -
54“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
55“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
56“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
57by Good, P. C. (Philip C.)“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1976
Government Document Book -
58“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
59by Tesch, Willard John“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1976
Government Document Book -
60“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book