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1973
Johnson, Maureen G.. Placer Gold Deposits of Nevada In U. S. Geological Survey Bulletin. Vol. 1356. Department of the Interior, 1973.
1969
Clifton, H. E., R. E. Hunter, F. J. Swanson, and R. L. Phillips. Sample Size and Meaningful Gold Analysis In U. S. Geological Survey Professional Paper. Vol. 625-C. Department of the Interior, 1969.