the use and benefit of all countries~ taking into particular c;1-ccount the needs of the developing countries, and assured and convenient access to that system so that it will be of general benefit. · 2. Provision for the needs of the developing countries · in "international space programmes, and steps to enable those countries to participate actiyely in such programmes. 3, Elaboration of meth,ods to upgrade-the scientific and technical capabilities of the developing countries in the various space fields in such a manner as to enable them to tackle important issues such as the occurrence of catastrophies brought about by environmental pollution or the re-entry of space objects, and the promotion of exchanges and consultations in such a way as to enable those countries to realize their various development programmes relating to the matter, 1/ Official Records of the General Assembly, Forty-third Session, Supplement No. 20 (A/43/20), 