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Anniversary scientific session of the USSR Academy of Sciences and IML
USSR. Moscow. November 17, 1970. President of the USSR Academy of Sciences Mstislav Vsevolodovich Keldysh (center) during a speech at the jubilee scientific session of the USSR Academy of Sciences and the Institute of Marxism-Leninism under the CPSU Central Committee, dedicated to the 150th anniversary of the birth of Friedrich Engels. Viktor Budan/TASS