This stamp was issued for the International Council for the Exploration of the Sea Conference, held in Copenhagen.
Designed by R. Nellemann. Engraved by C. Slania.
Released September 7, 1964
This stamp was issued for the International Council for the Exploration of the Sea Conference, held in Copenhagen.
Designed by R. Nellemann. Engraved by C. Slania.
Released September 7, 1964
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