What is the theory of relativity / by L. Landau and Y. Rumer. Theory of relativity Landau, L. D. (Lev Davidovich), 1908-1968. Rumer, �I�U. B. (�I�Uri�i Borisovich) Relativity (Physics) 530.11 LAW Moscow : Peace, c1961. c1961. 1961 Text 65 p. : eng