Progress, coexistence, and intellectual freedom : Andrei D. Sakharov. Translated by the New York Times. With introd., afterward, and notes, by Harrison E. Salisbury. Sakharov, Andrei, 1921-1989. Salisbury, Harrison E. (Harrison Evans), 1908-, ed. Civilization, Modern 1950- 327 SAP Originally published in the New York Times, July 22, 1968. New York : Norton, 1968. 1968. 1968 Text 158 p. ; eng