Showing 1 - 4 results of 4 for search 'Iowa Geological Survey', query time: 0.01s Refine Results
  1. 1
    A hydrogeologic study of the ground-water reservoirs contributing base runoff to Four Mile Creek, east-central Iowa /

    A hydrogeologic study of the ground-water reservoirs contributing base runoff to Four Mile Creek, east-central Iowa / by Kunkle, George R.

    Published 1968
    “…Iowa Geological Survey…”
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  2. 2
    Zinc-lead-copper resources and general geology of the upper Mississippi Valley district /

    Zinc-lead-copper resources and general geology of the upper Mississippi Valley district / by Heyl, Allen V. 1918-2008

    Published 1955
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  3. 3
    The geology of the upper Mississippi Valley zinc-lead district /

    The geology of the upper Mississippi Valley zinc-lead district / by Heyl, Allen V. 1918-2008, Flint, Arthur E., 1913-

    Published 1959
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  4. 4
    Regional tectonics and seismicity of southwestern Iowa : final report,1978-1982. /

    Regional tectonics and seismicity of southwestern Iowa : final report,1978-1982. / by Van Eck, O. J.

    Published 1982
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