Provision:
Cognizant of the references in the chapter on environment of the Final Act of the Conference on Security and Co-operation in Europe calling for co- operation to control air pollution and its effects, including long-range transport of air pollutants, and to the development through international cooperation of an extensive programme for the monitoring and evaluation of long-rangetransport of air pollutants, starting with sulphur dioxide and with possible extension to other pollutants,