By G.M. Clark, T.R. Maret, M.G. Rupert, M.A. Maupin, W.H. Low, and D.S. Ott
U.S. GEOLOGICAL SURVEY CIRCULAR 1160
The use of firm, trade, and brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Government.
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Last modified: Wednesday, November 23 2016, 12:07:02 PM