Colnect-2024-507-Liquid-helium-superfluidity-PKapitsa-1938.jpg
Source: Colnect
Issued by: Russia
Function: postage
Date: 6/20/2000
Denom: 1.75r
Color: multicolored
Design type: Russia 20th Century Science
Design: P.L. Kapitsa
Watermark: unwmk
Perf: 12.25x12
Catalog value:



External links:
Colnect 213486..a_1938-Science