References

Microsoft Encarta Encyclopedia, copyright 1997-2000, accessed July 21, 2000, http://encarta.msn.com/

M.J. Farabee, An On-Line Biology Book, January 10, 2000, accessed July 21, 2000, http://gened.emc.maricopa.edu/bio/bio181/BIOBK/BioBookTOC.html

Britannica.com, copyright 1999-2000, accessed July 21, 2000, www.britannica.com

University of California, Berkeley, Museum of Paleontology, Phylogeny Wing, 1997-2000, accessed July 21, 2000, http://www.ucmp.berkeley.edu/exhibit/phylogeny.html

National Institute of Allergy and Infectious Disease, Parasitic Roundworm Diseases, October 1998, accessed July 21, 2000, http://www.niaid.nih.gov/factsheets/roundwor.htm

Christian Damus, The Development of Insect Flight and Other Fascinating Displays, Hooper Virtual Paleontological Museum, March 1996, http://park.org/Canada/Museum/insects/insects.html

Christmas Island Tourism Association, Christmas Island, February 23, 2000, accessed July 22, 2000, http://www.christmas.net.au/