The 150th Birth Anniversary of M.V.Ostrogradsky 1951
Now showing: USSR - Postage stamps - 1951 - The 150th Birth Anniversary of M.V.Ostrogradsky - 1 stamps.
1951
The 150th Birth Anniversary of M.V.Ostrogradsky
10. December WM: None Sheetsize: 100 Design: V. Zavyalov Perforation: 12¼
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