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Peter Jacob Hjelm

1746–1813

Sweden

chemist

Linked elements

  • 42 Molybdenum (Mo)

Guides & chronologies

  • Themes
  • Historical timeline guide
  • World history chronology
  • Kings of France timeline
  • Popes timeline
  • Gauls & Alesia
  • Editorial method
  • Periodic table
  • Element timeline
  • Interactive timeline →

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World history timeline.

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