Chlorofluorocarbon propellants in the atmosphere, inhalers, and regulation : hearing before the Committee on Labor and Human Resources, United States Senate, One Hundred Fifth Congress, second session, on examining the federal role in the implementation of Title VI of the Clean Air Act as it relates to the use of chlorofluorocarbons (CFC) in metered dose inhalers (MDI), and an advance notice of proposed rulemaking to phase out essential use exemptions for CFC based MDI's, April 2, 1998.

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