Encyclopædia Britannica 1771–1860
Topic · 3 of 8 editions · peak 78 chars

ZIRCON

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EditionAs printedTypeCharsLocationvs. previous
4th ed. (1810)① ZIRCONarticle78vol. 20, p. 802
5th ed. (1815)② ZIRCONarticle78vol. 20, p. 802
6th ed. (1823)③ ZIRCONarticle78vol. 20, p. 802