English: Signature of George Vernadskiy, Russian-American Historian
Русский: Подпись Георгия Владимировича Вернадского (20 августа 1887 — 12 июня 1973), русского и американского историка.
Date
Source
My own archive
Author
George Vernadskiy
Licensing
Public domainPublic domainfalsefalse
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