(Vigginia)International symoosium on Multiple-Valued Logic 16th international symposium on Multiple-Valued Logic International symoosium on Multiple-Valued Logic International symposium on Multiple-valued Logic International Symposium on Multiplevalued logic 9th International Symposium on Multiple-Valued Logic International Symposium on Multiple-Valued Logic (Bath,England)International Symposium on Multiple-Vualed Logic International Sympesium on Multiple-Valued Logic International Symposium on Multile-Valued Logic