Proceedings of the First Marcel Grossmann Meeting on General Relativity: Organized and Held at the International Centre for Theoretical Physics, Trieste, and Istituto Di Fisica Teorica, University of Trieste, 7-12 July 1975
Proceedings of the First Marcel Grossmann Meeting on General Relativity: Organized and Held at the International Centre for Theoretical Physics, Trieste, and Istituto Di Fisica Teorica, University of Trieste, 7-12 July 1975