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  • "Outsmarting Poison Ivy and Its Cousins." FDA.
    http://www.fda.gov/fdac/features/796_ivy.html
  • "Poison Ivy: An Exaggerated Immune Response to Nothing Much."
    http://www.bio.umass.edu/micro/immunology/poisoniv.htm#pi-acd
  • Poison Ivy Fact Sheet. U.S. Department of the Interior.
    http://medical.smis.doi.gov/POISON%20IVY%20FACT%20SHEET.pdf
  • Poison Ivy. Family Doctor. http://familydoctor.org/839.xml
  • Poison Ivy FAQ. http://www.poison-ivy.org/html/faq.htm
  • "Poison Ivy: How to Identify and Control." Missouri Department of Conservation.
    http://www.conservation.state.mo.us/nathis/plantpage/flora/poivy/
  • Poison Ivy, Oak & Sumac. American Academy of Dermatology.
    http://www.aad.org/public/Publications/pamphlets/Poison_IvyOakSumac.htm
  • Poison Ivy, Oak, and Sumac. Go Ask Alice, Columbia University.
    http://www.goaskalice.columbia.edu/1354.html
  • Poison Ivy, Oak and Sumac Information Center. http://poisonivy.aesir.com