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Gavriil Tikhov with his wife at Pulkovo Observatory in 1912
Retrieved from " https://en.wikipedia.org/?title=User:OOOTenx&oldid=1072719352"
From Wikipedia, the free encyclopedia
Gavriil Tikhov with his wife at Pulkovo Observatory in 1912
Retrieved from " https://en.wikipedia.org/?title=User:OOOTenx&oldid=1072719352"

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