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Pyotr Frolov
Pyotr Kozmich Frolov (Russian:
Пётр
Козьми́ч
Фроло́в
; 27 January [O.S. 16 January] 1775 – 22 December [O.S. 10 December] 1839) was a Russian mining engineer...
1 KB (94 words) - 02:35, 16 June 2024