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Source:
Colnect
Issued by:
Poland
Function:
postage
Date:
11/23
/
1982
Denom:
6z
Color:
multicolored
Design type:
Polish mathematicians
Design:
Waclaw Sierpinski
Watermark:
unwmk
Perf:
11.25x11.5
Catalog value:
Prev:
5z d=Stanislaw Zaremba
Next:
12z d=Zygmunt Janiszewski
External links:
Colnect 114121..Mathematicians
