During August 1983, a group of 89 physicists from 59 labora- tories in 23 countries met in Erice for the 21st Course of the International School of Subnuclear Physics. The countries repre- sented were Algeria, Australia, Austria, Canada, Czechoslovakia, the Federal Republic of Germany, Finland, France, Hungary, India, Israel, Italy, Japan, the Netherlands, South Africa, Spain, Sweden, Switzerland, Taiwan, Turkey, the United Kingdom, the United States...