(1960)International Conference on Opertional Research International Conference on Opertional Research Interantional Conference on Operational Research (1970)International Conference on Nodestructive Testing (1990)International Conference on Expert Planning Systems (1970)International Conference on Nondestructive Testing (1972)International Conference on Superalloys Processing (1969)International Conference on Fluid Sealing (1990)International Conference on Data Engineering Proceedings of the 2d International Conference on Opertional Research