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Emergency and Continuous Exposure Limits for Selected Airborne Contaminants: Volume 2
Sherman, H. 1974. Long-term feeding studies in rats and dogs with dichlorodifluoromethane (Freon(R) 12 food freezant). Report No. 24–74. Newark, Delaware: E.I.du Pont de Nemours & Co., Haskell Laboratory for Toxicology and Industrial Medicine.  p. [Unpublished]
Shugaev, V.A. 1963. The toxicology of refrigerant Freon-12. In: Levine, B.S., ed. U.S.S.R. Literature on Air Pollution and Related Occupational Diseases. Vol. 12. A survey. 1966. p. 161–163. [Translation of: Gig. Sanit. 28(6):95–97, 1963]. Available from Natl. Technical Information Service, Springfield, VA as TT 66–61429.
Stecher, P.G., Windholz, M., and Heahy, D.S., es. 2968. The Merck Index: An Encylopedia of Chemicals and Drugs. 8th ed. Rahway, New Jersey: Merck & Co., Inc. p. 351–352.
Watanabe, T., and Aviado, D.M. 1975. Subacute inhalational toxicity of aerosol propellants. Pharmacologist 17:192, abstr. 097.