The effect of chlorofluorocarbons on the ozone layer : hearing before the Subcommittee on Toxic Substances and Environmental oversight of the Committee on Environment and Public Works, United States Senate, ninety-seventh Congress, first session, July 23, 1981.
United States.Congress.Senate.Committee on Environment and Public Works.Subcommittee on Toxic Substances and Environmental Oversight.
Washington : USGPO,
1981.
Atmospheric ozone