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Literature Cited

  • Foreman, D. 1991. Confessions of an eco-warrior. Harmony Books, New York .
  • Ripple, W. J., and R. L. Beschta. 2004. Linking wolves and plants: Aldo Leopold on trophic cascades. BioScience 55: 613621.
  • Wilson, E. O. 1994. The diversity of life. W.W. Norton, New York .