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Source:
Colnect
Issued by:
Russia
Function:
postage
Date:
11/25
/
1987
Issue:
Science in USSR
Denom:
20k
Color:
multicolored
Design:
"Ratan-600"
Watermark:
unwmk
Perf:
11.5
Catalog value:
Prev:
10k d=Kolskaya borehole
Next:
12/2/1987 5k issue=New Year 1988 perf=12x12.25
External links:
Colnect 89872-..iet_Union_USSR
