http://psep.cce.cornell.edu/facts-slides-self/facts/gen-pubre-carcin-wilkinson.aspx

It discusses the growth of human cancer incidence in the United States, its causes and factors of human exposure. It defines what is a carcinogen, and its types, as human, chemical, and naturally occurring carcinogens. Also, it discusses the regulatory goals and directions to protect the public against the potencially adverse health effects of chemicals. It presents bibliographic references.