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Stamps of
Austria
,
10th International Mathematical Congress
issue
List
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Catalog
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All issuers
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1 to 1 of 1
postage
1981
, Sep 14
10th International Mathematical Congress issue
unwmk
p.
14.25x13.75
-
4s
multi
Impossible Dice Construction by MC Escher 1898-1972
1 to 1 of 1