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                Boston, Massachusetts. <http://www.bartleby.com/61/16/G0201600.html>. Accessed 20 April 2008.

    2)  Breuer, T., M. Ndoundou-Hockemba, and V. Fishlock. 2005. First observation of tool use in wild gorillas. PLoS
                Biology 3 (11): 2041-2043.

    3)  Cawthon Lang, K.A. 2005. Primate factsheets: gorilla (Gorilla) taxonomy, morphology, & ecology.        
                <http://pin.primate.wisc.edu/factsheets/entry/gorilla>. Accessed 18 April 2008.

    4)  Fleagle,  J.G. 1999. Primate adaptation and evolution. 2nd ed. Academic Press, San Diego, California, USA. 6-39,
                247-248, 283-309.

    5)  Freeman, Scott. 2005. Biological Science. 2nd ed. Pearson Education, Inc., Upper Saddle River, New Jersey, USA.     

                765-773.

    

    6)  Gibbon, Ann. 2007. News focus - American Association of Physical Anthropologists meeting: gorillas' hidden history
                revealed. Science 316: 364-365.


    7)  Gorilla Facts. 2000. The Gorilla Foundation. <http://www.koko.org/about/facts.html>. Accessed 18 April 2008.

    8)  Gorillas. 2007. [WWF] World Wildlife Federation.     

   <http://www.panda.org/about_wwf/what_we_do/species/about_species/species_factsheets/great_apes/gorillas/index.cfm>.
                Accessed 18 April 2008.

   

    9)  [IUCN] International Union for Conserving Nature. 2007. 2007 IUCN red list of threatened species: extinction crisis
    

                excalates. Biodiversity 8(3): 17-18.

   10) Koko's world. 2006. The Gorilla Foundation. <http://www.koko.org/world/>. Accessed 11 April 2008.

 

   11) Leendertz, F. H., F. Lankester, and P. Guislain, eds. 2006. Anthrax in western and Central African great apes.
    

    American Journal of Primatology 68 (9): 928-933.

   12) Mission Part 1: Research. 2004. The Gorilla Foundation. <http://www.koko.org/friends/research.koko.html>.    
                Accessed 18 April 2008.


   13) Patterson, Dr. Francine. 1985. Koko’s kitten. Scholastic Inc., New York, New York, USA.



   14) Rogers, M., K. Abernethy, and M. Bermejo, eds. 2004. Western gorilla diet: a synthesis from six sites. American


    Journal of Primatology, 64 (2): 173-192.


   15) Rowe, N. 1996. The pictorial guide to the living primates. Pogonias Press, East Hampton, New York. 219-227.


    

   16) University of Michigan. 2008. Primates. Animal Diversity Web.

                <http://animaldiversity.ummz.umich.edu/site/accounts/classification/Primates.html#Primates>. Accessed 20 April

                2008.

   

   17) Van Heuverswyn, F., and others. 2006. SIV infection in wild gorillas. Nature 444: 164.

   18) Western Lowland Gorilla. 2008. St. Louis Zoo.
    

                <http://www.stlzoo.org/animals/abouttheanimals/mammals/lemursmonkeysapes/westernlowlandgorilla.htm>. 

             Accessed 19 April 2008.

Background image used in title bar:

   Fir0002. 2006. Cumulus clouds panorama. (image).
                <http://en.wikipedia.org/wiki/Image:Cumulus_clouds_panorama.jpg>. Accessed 18 April 2008.
   

Background image used in menu bar:

    Perojevic. 2007. Jungle. (image). <http://commons.wikimedia.org/wiki/Image:Jungle.jpg>. Accessed 18 April 2008.          

Special Thanks to Tylor Arndt! :)   

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