(Ohio)International Symposium on Electrochemistry in Mineral and Metal Processing International Symposium on Electrochemistry in Mineral and Metal Processing (Tokyo)International Symposium on Electrolslag Remelting Processes International Symposium on Primary and Secondary Lead Processing Electrochemistry in Mineral and Metal Processing International Symposium on Electrolslag Remelting Processes (Prague)International Symposium on Plastics in Material and Structural Enginering International Symposium on Plastics in Material and Structural Enginering IUPAC International Symposium on the Chemistry of Natural Products International Symposium on Exoelectron Emission and Applictions