Science in USSR issue of Russia
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Short desc: Science in USSR
Issuer: Russia Date: 11/25/1987 Sort position: 3 Consists of 3 stamps: (See stamps as list) 5k d=Tokamak thermonuclear system 10k d=Kolskaya borehole 20k d="Ratan-600" All are perf=11.5 Record of changes |
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