Sources

Amato, Ivan, New Stuff in the Old World. Avon Books: New York, p 50-52, 1997.

Karwatka, Denni, Technology's Past: America's Industrial Revolution. Prakken Publications: New York, 1997.

Vulcanization.The Columbia Encyclopedia, 6th ed. New York: Columbia University Press, 2003.

www.boesch.to/malaysia/albumhtm, "Rubber Tree,"[April 30 2003].

www.bouncingballs.com/science, "The Vulcanization of Rubbers."[April 2 2003].

www.infoplease.com,"Encyclopedia: Vulcanization."[April 20 2003].

www.regentmedical.com, "Vulcanization of Rubber."[April 23 2003].

www.wikipedia.org, "Vulcanization,"[April 25 2003].