File:The Soviet Union 1971 CPA 4006 stamp (Symbols of Science and History and Commemorative Scroll).jpg
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Categories:
- 1971 all stamps of the Soviet Union
- History of science on stamps
- Science on stamps of the Soviet Union
- History on stamps
- Scrolls on stamps
- Globes on stamps of the Soviet Union, 1971
- Congresses on stamps
- Sputnik-1 on stamps
- Cherepanov steam locomotive
- Formulas on stamps
- Ostankino Tower on stamps of the Soviet Union
- International Union of History and Philosophy of Science