File:The Soviet Union 1970 CPA 3928 stamp (Lock Operator and Canal ('Irrigation and Chemical Research')).png
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Categories:
- 1970 all stamps of the Soviet Union
- The Central Committee of the Communist Party of the Soviet Union Plenum on Agriculture (1970.07.2–3) Resolutions Soviet Union stamp series, 1970
- Canal locks on stamps
- Canal locks in Russia
- Canals on stamps
- Canals in Russia on stamps
- Irrigation on stamps
- Irrigation canals in Russia
- Chemistry on stamps
- Chemistry in Russia
- Helicopters on stamps of the Soviet Union
- Factories on stamps
- Factories in Russia on stamps