General relativity and cosmology : proceedings - International School of Physics "Enrico Fermi" (1969, June30th to July, 12th : Villa Monastero); Sachs, R. K. (Rainer Kurt), 1932-; Societa italiana di fisica (New York : Academic Press, 1971)
At head of title: Italian Physical Society
Added t.p. in Italian, with title: Relativita generale e cosmologia
Course held June 30-July 12, 1969
Keywords: Cosmogony; Astrophysics; Relativity (Physics)