proceedings of the International School of Physics "Enrico Fermi" course. 56, held in Varenna, Sul Lago di Como, Villa Monastero, July 17-29, 1972 International School of Physics "Enrico Fermi" Varenna, Italy 1972 July 17-29 creator Bertotti, B., ed. text xx New York Academic Press 1974 9999 monographic eng

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xv, 574p. edited by B. Bertotti  Gravitation   Gravitational Theory Astronomy and Astrophysics Thesaurus  063:53 ENF-56 211028