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The Turner Thesis - 0 views

xroads.virginia.edu/TURNER Wilderness Frontier
shared by Frank Gaughan on 06 Sep 11 - Cached
  • Frank Gaughan on 06 Sep 11
     
    A hyperlinked text of Frederick Jackson Turner's famous frontier thesis.
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Pale Blue Dot - 0 views

www.youtube.com/watch Wilderness Space Frontier CarlSagan
shared by Frank Gaughan on 19 Sep 11 - Cached
  • Frank Gaughan on 19 Sep 11
     
    A reading and an image from Carl Sagan's book.
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