The Use of Airspace and Outer Space for All Mankind in the 21st Century (Hardcover) - Proceedings of the International Coference on Air Transport and Space Application in a New World held in Tokyo from 2-5 June 1993
The Use of Air and Outer Space Cooperation and Competition (Hardcover) - Proceedings of the International Conference on Air and Outer Space at the Service of World Peace and Prosperity, Held in Beijing from 21-23 August 199