Sources of Chemicals and Supplies:
Sigma-Aldrich Chemical CompanyP.O. Box 14508St. Louis, MO 631781-800-325-3010http://www.sigma-aldrich.com
Fisher Scientific2000 Park Lane Dr.Pittsburgh PA 15275-99431-800-766-7000http://www.fishersci.com
Ward's Natural SciencePost Office Box 92912Rochester, NY 14692-90121-800-962-2660http://www.wardsci.com
Carolina Biological Supply Company2700 York RoadBurlington, NC 272151-800-334-5551http://www.carolina.com
Books:
Hampton, R., E. Ball, and D. DeBoer, eds. 1990. Serological Methods for Detection and Identification of Viral and Bacterial Plant Pathogens: A Laboratory Manual American Phytopathological Society Press, St. Paul, MN.
Double diffusion tests are commonly called "Ouchterlony Double Diffusion Tests" because Orjan Ouchterlony gave them critical analysis in 1968 in Handbook of Immunodiffusion and Immunoelectrophoresis published by Ann Arbor Science Publishers, Ann Arbor, Michigan.
Websites:
All the virology that is on the World Wide Web:http://www.virology.net
The Big Picture Book of Viruses offers a searchable archive of many images of viruses.http://www.virology.net/Big_Virology/BVHomePage.html