Nils Gabriel Sefström (2 June 1787 – 30 November 1845) was a Swedish chemist and metallurgist. A protégé of Jöns Jakob Berzelius, he rediscovered the element vanadium in 1830 while investigating the brittleness of steel.
Further reading
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- Svenskt biografiskt handlexikon: Sefström, Nils Gabriel - in Swedish