Encyclopædia Britannica 1771–1860
Topic · 2 of 8 editions · peak 1,440 chars

IO

1st2nd3rd4th5th6th7th8th
EditionAs printedTypeCharsLocationvs. previous
4th ed. (1810)IOarticle1,440vol. 11, p. 303
7th ed. (1842)IOarticle1,438vol. 12, p. 337reprint · J 0.91