During August 1985, a group of 95 physicists from 61 laboratories in 24 countries met in Erice for the 23rd Course of the International School of Subnu- clear Physics. The countries represented were: Algeria, Austria, Belgium, Brazil, Bulgaria, Czechoslovakia, France, the Federal Republic of Germany, India, Italy, Japan, Marocco, Norway, Pakistan, the Peoples' Republic of China, South Africa, South Korea, Spain, Sweden, Switzerland, Turkey, the United...