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Source:
Colnect
Issued by:
Russia
Function:
postage
Date:
6/20
/
2000
Denom:
1.75r
Color:
multicolored
Design type:
Russia 20th Century Science
Design:
I.E. Tamm
Watermark:
unwmk
Perf:
12.25x12
Catalog value:
Prev:
1.30r d=N.N. Luzin
Next:
1.75r d=P.L. Kapitsa
External links:
Colnect 213485..m_1929-Science
