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Sheet 68
Space stations orbiting Earth in the national colours of Poland and the Soviet Union
The Intercosmos program was a program by the Soviet Union to allow fellow socialist nations to participate in space exploration.
Międzynarodowa współpraca naukowo-techniczna w ramach programu Interkosmos = International Scientific-technical cooperation within the framework of the Intercosmos program.
1980 r. = The year 1980.
Dopłata na PZF (Polskiego Związku Filatelistycznego) = Surcharge for the Polish Philatelic Society.