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About Gregor von Helmersen
Gregor von Helmersen or Grigory Petrovich Helmersen was a Baltic German geologist.
Everything about Gregor von Helmersen →- Occupation
- geologist, explorer, geographer, cartographer
- Citizenship
- Russian Empire
- Born
- September 29, 1803, October 11, 1803
- Died
- February 3, 1885, February 15, 1885