United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Toxic Substances and Environmental Oversight & ProQuest (Firm). (1981). 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. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Toxic Substances and Environmental Oversight and ProQuest (Firm). 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. Washington: U.S. G.P.O., 1981.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Toxic Substances and Environmental Oversight and ProQuest (Firm). 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. U.S. G.P.O., 1981.