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  1. 1
    Effects of seasonal changes and ground ice on electromagnetic surveys of permafrost /
    by Arcone, Steven A.
    Published 1979
    Government Document Book
  2. 2
    Subsea permafrost in Harrison Bay, Alaska : an interpretation from seismic data /
    by Neave, K. G.
    Published 1982
    Government Document Book
  3. 3
    Radar profiling of buried reflectors and the groundwater table /
    by Sellmann, P. V. (Paul V.)
    Published 1983
    Government Document Book
  4. 4
    Ripping frozen ground with an attachment for dozers.
    by Sellmann, P. V. (Paul V.)
    Published 1997
    Adobe Acrobat Reader required to view individual titles
    Government Document Book
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