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Web Resources:
http://interactive.cfra.com/1999/02/26/96302.html
http://www.ah.csiro.au/Topics/frogs/frogs.htm
http://www.news.mpr.org/features/199806/01_losurem_frogs01/
http://www.npwrc.usgs.gov/narcam/
Stamp images provided by The Froggy Page