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Source:
Colnect
Issued by:
Paraguay
Function:
postage
Date:
5/18
/
1971
Issue:
International Education Year
Denom:
20g
Color:
multicolored
Design:
Watermark:
unwmk
Perf:
11
Catalog value:
Prev:
10g
Next:
25g
External links:
Colnect 699068.._Year_-_UNESCO
