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Source:
Colnect
Issued by:
Nicaragua
Function:
postage
Date:
5/15
/
1971
Issue:
Physical Laws and Mathematical Formulas
Denom:
25c
Color:
multicolored
Design:
J. Napier
Watermark:
unwmk
Perf:
Catalog value:
Prev:
20c d=Albert Einstein (1971 Nicaragua)
Next:
30c d=Pythagoras
External links:
Colnect 533765..ms-Mathematics
Record of changes
