Stratospheric ozone depletion and chlorofluorocarbons : joint hearings before the Subcommittees on Environmental Protection and Hazardous Wastes and Toxic Substances of the Committee on Environmental and Public Works, United States Senate, One Hundredth Congress, first session ... May 12, 13, and 14, 1987

"Stratospheric ozone depletion and chlorofluorocarbons : joint hearings before the Subcommittees on Environmental Protection and Hazardous Wastes and Toxic Substances of the Committee on Environmental and Public Works, United States Senate, One Hundredth Congress, first session ... May 12, 13, and 14, 1987"@en
"Stratospheric ozone depletion and chlorofluorocarbons : joint hearings before the Subcommittees on Environmental Protection and Hazardous Wastes and Toxic Substances of the Committee on Environment and Public Works, United States Senate, One hundredth Congress, first session on the effect of chlorofluorocarbons on stratospheric ozone, health effects of ozone depletion, and substitutes for ozone depleting chemicals, May 12, 13, and 14, 1987"@en
"Stratospheric ozone depletion and chlorofluorocarbons joint hearings before the Subcommittees on Environmental Protection and Hazardous Wastes and Toxic Substances of the Committee on Environment and Public Works, United States Senate, One hundredth Congress, first session ... May 12, 13,and 14, 1987"@en