Hydrogeologic framework of the Upper Colorado River Basin- excluding the San Juan Basin-Colorado, Utah, Wyoming, and Arizona
G.W. Freethey
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B.A. Kimball
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D.E. Wilberg
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J.W. Hood
Geoffrey W. Freethey
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Gail E. Cordy
Donald S. Sweetkind
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Melissa D. Masbruch
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Jesse Dickinson
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Patrick C. Longley