Complex sentence: Karl Gottlob Kühn of Leipzig (1754--1840) published an edition of 122 of Galen's writings (1821--1833) and his edition, which is the most complete although flawed, consists of the Greek text with facing-page Latin translation.
Split into simpler sentences: Karl Gottlob Kühn of Leipzig (1754--1840) published an edition of 122 of Galen's writings between 1821 and 1833. His edition, which is the most complete, although flawed, consists of the Greek text with facing-page Latin translation.