Math and Belgium stamps

By on 01/02/2016
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Gerhard Mercator
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In 1994 this Belgian stamp was issued at the occasion of the 400th anniversary of Gerhard Mercator’s death.
Adolphe Quetelet
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In 1974 this Belgian stamp was issued in memory of the 100th anniversary of the date of death of Adolphe Quetelet.

 

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