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International Olympiad in Informatics. Date of issue: 10th August 2019 Designer: Paper: chalky Printing process: offset Perforation: frame 13 1/2 : 13 Size of a stamp: 37 x 52 mm. Size of the Souvenir Sheet: 75 x 93 mm Printing run: Michel catalogue number: Block223 (1451) 1,50 M. multicoloured. Emblem of International Olympiad in Informatics 2019 in Baku. |
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