Slovak observatories involved in the Interkosmos program

Article dedicated to the philatelic documentation of Slovak observatories involved in the Interkozmos program.

23. 10. 2025
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01. 05. 2011
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29. 04. 2011
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29. 04. 2011
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Inauguration of the postage stamp Beauties of our Homeland: The Dobsinska Ice Cave
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Inauguration of the postage stamp Beauties of our Homeland: The Dobsinska Ice Cave
30. 03. 2011
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17. 12. 2010
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06. 12. 2010
Christmas Post 2010
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03. 12. 2010
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26. 11. 2010
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