The Physics of Non-Thermal Radio Sources: Proceedings of the NATO Advance Study Institute held in Urbino, Italy, June 29—July 13,1975

Structure and Evolution of Galaxies: Lectures Presented at the NATO Advanced Study Institute held at the International School of Astrophysics at the ‘Ettore Majorana’ Centre for Scientific Culture in Erice (Sicily) Italy, June 22–July 9, 1974

Origin of Cosmic Rays