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Your search (title="Earth as Modified by Human Action") found 1 title(s).

1. The Earth as Modified by Human Action [electronic resource] / by George P. Marsh
   author: Marsh, George P., 1801-1882
   title: Earth as Modified by Human Action
   pagination: [none specified]
   publisher: Project Gutenberg, 2004
   notes: Project Gutenberg Freely available. Electronic text
   subjects:
   url: http://www.gutenberg.org/etext/6019