References

1) "American Bison." Nature Works. nhtpv.org. Web. 5 March. 2012

           

         http://www.nhptv.org/natureworks/americanbison.htm 

2) "American Bison." Wikipedia. 13 Feb 2012.http://en.wikipedia.org/wiki/American_bison

3) Bowden, Charles. "The Empties Prairie." National Geographic. March 2012.

      

           http://ngm.nationalgeographic.com/2008/01/emptied-north-dakota/bowden-text 

4) Deborah, Frank Popper. "The bison are coming." High Country News. Feb 2 1988.

            

           http://www.hcn.org/issues/123/3945

5) Deborah, Frank Popper. "The Great Plains:From Dust to Dust." Planning Magazine.  

           

             Dec 1987 http://www.lacusveris.com  

           

6) "History of American Bison." Thunder Ridge Bison. May 2005.

      

            http://www.thunderridgebison.com/bison_history.htm

 7) Gross, John. "Effects of Population Control Strategies and Retention of Genetic Diversity in 

           National Park Service Bison." Google Books. Jan 2005. http://www.buffalofieldcampaig             

           n.org/habitat/documents2/Gross_and_Wang_Effects.pdf 

8) Novacek, Michael. "Bison and Pronghorn Diorama." American Museum of Natural  

          History.     2005.  http://www.amnh.org/exhibitions/virtual/bison/history.php

9) "Population Bottleneck." Wikipedia. 16 Aug. 2012. http://en.wikipedia.org/wiki/Population_bottleneck

         "Overpopulation of Wild Bison Fact Sheet-Yellowstone National Park Buffalo-are there too 

           many?" Buffalo Field Compaign. 8 Jan. 2004. http://www.buffalofieldcampaign.org/facts

 

10) William T. Hornaday. "The Extermination of the American Bison." The Project Gutenberg 

        EBook.  Feb 10, 2006. http://www.gutenberg.org/files/17748/17748-h/17748-h.htm