Colnect-4606-264-H-C-Urey-Discoverer-of-Heavy-Water.jpg
Source: Colnect
Issued by: Romania
Function: postage
Date: 8/30/1999
Issue: 20th Century
Denom: 7300l
Color: multicolored
Design: heavy water diagram & H. C. Urey
Watermark: unwmk
Perf: 13.25
Catalog value:



External links:
Colnect 203873..r-20th_Century


Record of changes