Encyclopædia Britannica 1771–1860
Topic · 3 of 8 editions · peak 77 chars

IRIDIUM

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EditionAs printedTypeCharsLocationvs. previous
4th ed. (1810)① IRIDIUMarticle77vol. 11, p. 356
5th ed. (1815)② IRIDIUMarticle77vol. 11, p. 356
8th ed. (1853–60)③ IRIDIUMarticle65vol. 12, p. 536