Proceedings of the 1999 Summer School in Particle Physics: Ictp, Trieste, Italy 21 June-9 July 1999

Proceedings of the 1999 Summer School in Particle Physics, Trieste, Italy, June 21 through July 9, 1999. Articles give a comprehensive view of the state-of-the-art of modern particle physics, with emphasis on the areas where new experimental results will lead to significant progress.