Country

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  Austria (2) Czechoslovakia (2) East Germany (1) Hungary (3) Malta (1) Poland (4) Portugal (8) San Marino (1) United Nations (Geneva) (2)

Year

• 1976 (24) 

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Themes

•  Architecture (5)
•  Birds (1)
•  CEPT (22)
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•  Communications (4)
•  Cultures (4)
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•  Nature (1)
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•  Post (14)
•  Science (10)
•  Space (1)
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Product

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•  Postage stamps (23)