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Source:
Colnect
Issued by:
Poland
Function:
postage
Date:
11/23
/
1982
Denom:
12z
Color:
multicolored
Design type:
Polish mathematicians
Design:
Zygmunt Janiszewski
Watermark:
unwmk
Perf:
11.25x11.5
Catalog value:
Prev:
6z d=Waclaw Sierpinski
Next:
15,00z d=Stefan Banach
External links:
Colnect 114122..Mathematicians
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