Title: Optimism, to estʹ Nailuchshīĭ svi︠e︡t, sostoi︠a︡shchīĭ v prodolzhenīi istorīi Kandida /
Authors: Voltaire, 1694-1778.; Gurʹev, Ivan.
Publisher: v Tipografīi Artillerīĭskago i Inzhenernago Shli︠a︡khetnago Kadetskago Korpusa],
Year: 1779