International Symposium on Nephrotoxicity International Symposium on Neurosecretion International Symposium on Herpesvirus. International Symposium on Macromolecules International Symposium on Actinide. International Symposium on Ammonia. International Symposium on Molten Salts International Symposium on Synergetics International Symposium on Yeasts International Symposium on Atherosclerosis