Environmental policy of the United States from the sun. Chlorofluorocarbons (CFCs), which were used beginning in the 1930s in a number of important areas, were determined in 1974 to be responsible for much of the depletion of the ozone layer. Four years later, the EPA and FDA banned CFCs in aerosol cans. As research in the 1980s indicated that the problem was worse than before, and revealed a controversial massive hole in the ozone layer over Antarctica, three international agreements were made to reduce the ozone-damaging substances- the Vienna Convention, the 1987 Montreal Protocol, and a third agreement in 1990 in London. In the United States,
United Nations Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances stereoisomers in EU Category 1. See also the article: drug precursors The salts of the substances listed in this Table whenever the existence of such salts is possible. The salts of the substances listed in this Table whenever the existence of such salts is possible. The salts of hydrochloric acid and sulphuric acid are specifically excluded from Table II. United Nations Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances The United Nations Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances of 1988 is one of three major drug control treaties currently in force. It provides additional