Source:
Proctor, R.N. "Puffing on Polonium." The New York Times. 01 Dec. 2006. Web.
"Polonium-210 In Tobacco Smoke As A Tracer For Particle Deposition And Movement In Human Lungs." Truth Tobacco Industry Documents, 15 Apr. 1964.
"Exposure Of Cigarette Smokers To Polonium-210." Truth Tobacco Industry Documents, 1964. Report.
Hager, JH. "Telephone Conversation, R. K. Heimann, This Date." Truth Tobacco Industry Documents, 09 June 1967. Letter.
Pedersen, PM. "Filter Cigarettes For Removing Polonium From The Smoke, Interview With Mr. Nelson Stewart On September 23, 1964." Truth Tobacco Industry Documents, 25 Sept. 1964. Letter.
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