Recognizing the efforts of all countries, in particular those that produce narcotic drugs for scientific and medical purposes, and of the International Narcotics Control Board in preventing the diversion of such substances to illicit markets and in maintaining production at a level consistent with licit demand, in line with the Single Convention on Narcotic Drugs of l961United Nations, Treaty Series, vol. 520, No. 7515. and the Convention on Psychotropic Substances of 1971,Ibid., vol. 1019, No. 14956.
确认所有国家，特别是为科学和医疗目的生产麻醉药品的国家以及国际麻醉品管制局，根据《1961年麻醉品单一公约》联合国，《条约汇编》，第520卷，第7515号。 和《1971年精神药物公约》，同上，第1019卷，第14956号。 为防止这类药物转入非法市场并使产量保持在符合合法需求的水平上所作的努力，