General relativity and cosmology - Varenna, Italy. Scuola Internazionale di Fisica; Sachs, R. K. (Rainer Kurt); Societa italiana di fisica; International School of Physics'Enrico Fermi' 1969 : Varenna, Italy) (New York : Academic Press, 1971)
Second title page in Italian. At head of title: Italian Physical Society
Course held June 30-July 12, 1969
Includes bibliographical references
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Keywords: Cosmogony; Astrophysics; Relativity (Physics) -- Congresses