Dear colleague, This is the first Announcement of the 11th International Conference of the International Society for Scientometrics and Informetrics (ISSI) to be held in June 25-27 2007 in Madrid (Spain) hosted by the Spanish Research Council (CSIC). Please, find the First Announcement at the conference website: http://issi2007.cindoc.csic.es Best regards, Isidro F. Aguillo on behalf of the Organising Committee isidro@cindoc.csic.es CINDOC-CSIC Spanish Research Council Joaquin Costa, 22 28002 Madrid. SPAIN http://www.cindoc.csic.es