International co-operation in the peaceful uses of outer space: Report of the Committee on the Peaceful Uses of Outer Space. Agenda item 30 (XXI). Conclusion of an international treaty on principles governing the activities of States in the exploration and use of outer space, the moon and other celestial bodies. Agenda item 89 (XXI). Treaty governing the exploration and use of outer space, including the moon and other celestial bodies. Agenda item 91 {XXI). Letter dated 9 Dec 1966 from the Charged'Affaires, a. i. of the Mission of the Republic of Liberia to the United Nations addressed to the Secretary-General of the United Nations