Awarding M.V. Keldysh and I.G. Petrovsky

USSR. Moscow. April 1966. Ambassador Extraordinary and Plenipotentiary of Chile to the USSR Maximo Pacheco and Soviet mathematician, rector of the Moscow State University named after M. V. Lomonosov Ivan Georgievich Petrovsky, who was awarded a silver medal by the University of Chile, (left to right) during the award ceremony. The exact date of the photo is unknown. Lev Porter/TASS