International Seminar on Advances in Optical Production Technology,London,1977 Advances in optical production technology International Conference on Production Technology International Symposium on Acvances in Pacemaker Technology International Symposium on Gas Separation Technology International Iron and Steel Institute.Committee on Technology International Seminar on Recent Advances in Boundary Element Methods International Conference on Rapid Solidification processing and Technology International Topical Conference on Electron Beam Research and Technology International Association for the Advancement of High pressure Science and Technology