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Source:
Colnect
Issued by:
Nicaragua
Function:
postage
Date:
5/15
/
1971
Issue:
Physical Laws and Mathematical Formulas
Denom:
2cord
Color:
multicolored
Design:
Archimedes
Watermark:
unwmk
Perf:
Catalog value:
Prev:
2cord d=J. C. Maxwell
Next:
9/6/1971 10c blk<bl issue="Is There a Formula for Peace?" perf=14
External links:
Colnect 533760..aw-Mathematics
Record of changes
