Hydrology and chemical quality of ground water in Crowley County, Colorado
Doug Cain
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Barbara J. Ryan
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Patrick J. Emmons
John Richard Rapp
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H.M. Babcock
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W.H. Durum
Alfred E. Torrey
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Frank Albert Swenson
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Herbert A. Swenson
H.M. Babcock
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John Richard Rapp
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W.H. Durum