The transition from CFC to HFA propellants is occurring because of public health concerns about the detrimental effects of CFCs on stratospheric ozone levels. In 2005, the Food and Drug Administration ...
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Chlorofluorocarbon effects and regulations : hearing before the Subcommittee on the Upper Atmosphere of the Committee on Aeronautical and Space Sciences, United States Senate, Ninety-fourth Congress, ...
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