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21Published 1994“...[U.S. Geological Survey] ;...”
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22
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23by Miller, Robert T.“...U.S. Geological Survey ;...”
Published 1994
Government Document Microform Book -
24Published 2000“...U.S. Geological Survey,...”
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Government Document Book -
25
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26by Dean, Walter E.“...U.S. Geological Survey,...”
Published 2006
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27by Winterstein, Thomas A.“...U.S. Geological Survey,...”
Published 2007
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Government Document eBook -
28
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29
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30by Cotter, R. D. (Ralph D.), 1929-“...U.S. Geological Survey,...”
Published 1964
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31by Christensen, Victoria G.“...U.S. Geological Survey,...”
Published 2005
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32
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33by Larson, Diane L.“...U.S. Geological Survey,...”
Published 2009
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34
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35by Sims, P. K. (Paul Kibler), 1918-2011“...U.S. Geological Survey,...”
Published 1980
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36by Sims, P. K. (Paul Kibler), 1918-2011“...U.S. Geological Survey,...”
Published 1978
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37
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38by Myette, C. F.“...U.S. Geological Survey ;...”
Published 1984
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39
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40Published 1903“...U.S. Geological Survey,...”
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