1. Anonynous. A Preliminary Report on Asbestos in the Duluth Minnesota Area. Office of Technical Analysis Office of Enforcement and General Counsel Environmental Protection Agency Washington D. C. 1974 Chaps. 1 and 3.
2. Asbestos Contamination of Parenteral Drugs
3. Talc in atmospheric dusts
4. Silverberg E. and Holleb A. Cancer Statistics 1971. American Cancer Society Inc. New York N. Y. 1972.
5. Hammond E. C. Personal communication concerning ongoing research at the East Orange V.A. Hospital colon and rectum cancer 1974.