Comets

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1956 Sc 1866 125th Birth Anniversary of Fyodor Bredikhin Scott 1887
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1957 Sc 1937-1939 International Geophysical Year Scott 1957-1959
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1986 Sc 5634 Intercosmos Project Halley, Final Stage Scott 5433
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1986 Sc 5635 BL 190. International Programm “Venus – Halley’s Comet”. Scott 5434
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