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61by Littin, G. R.“...U.S. Geological Survey,...”
Published 1987
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62
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63Published 1994“...U.S. Geological Survey,...”
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64
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65by Gonthier, Joseph B.“...U.S. Geological Survey,...”
Published 1985
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68by Krug, William R.“...U.S. Geological Survey,...”
Published 1990
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69by Lindgren, Richard J.“...U.S. Geological Survey,...”
Published 1995
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70by Sloto, Ronald A.“...U.S. Geological Survey,...”
Published 1997
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71by Brahana, J. V.“...U.S. Geological Survey,...”
Published 1986
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72by Brahana, J. V.“...U.S. Geological Survey,...”
Published 1986
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73
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75by Woodward, D. G.“...U.S. Geological Survey,...”
Published 1985
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76by Brabets, Timothy P.“...U.S. Geological Survey,...”
Published 1984
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78by Brahana, J. V.“...U.S. Geological Survey,...”
Published 1986
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