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Postage stamp printed in Russia with stamp of Kovdor shows Quantum electronics foundations, N. Basov, A. Prokhorov, 1960s, Coat of #175150016
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MOSCOW, RUSSIA - MARCH 1, 2020: Postage stamp printed in Russia with stamp of Kovdor shows Quantum electronics foundations, N. Basov, A. Prokhorov, 1960s, Coat of arms, Ballet, serie, circa 1998-2000
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