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A USSR stamp, Science in USSR. Date of issue: 25th November 1987. Designer: A. Kernosov Michel catalogue numbers: 5774-5776. 5 K. sepia and olive-grey. Tokamak thermonuclear system
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A USSR stamp, Science in USSR. Date of issue: 25th November 1987. Designer: A. Kernosov Michel catalogue numbers: 5774-5776. 5 K. sepia and olive-grey. Tokamak thermonuclear system
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