Δοκίμιον περὶ τῆς πλαισιεστάτης συγγενείας τῆς Σλαβονο-Ρωσσικῆς γλώσσης πρὸς τὴν Ἑλληνικὴν. Translation into Russian: Experiments on the closest affinity of the Slavic-Russian language with Greek. Author: The book was written by Konstantin Ekonomidis (Greek priest and economist), who was engaged in deep philological research. The author acts as a researcher of the interrelations of languages and cultures, in particular, Slavic-Russian and ancient Greek. The lexicon is useful for studying the influence of Greek words and concepts in Slavic languages. Historical context: The study links philology with history and cultural exchange between Byzantium and the Slavic world. The author relies on the Church Slavonic language as a point of contact between the two cultures. Features of the publication: The text is printed in two language versions: Greek and Russian. The 19th century style is used with the characteristic font and orthography of the time. The second volume includes extensive speech and lexical materials. Historical value of the book: This unique edition demonstrates how Greek culture and language influenced the development of Slavic peoples. Publication of 1828 (the era of flourishing interest in philology in the Russian Empire), the printing house of the Department of Public Education in St. Petersburg. The book is in good condition, which is extremely rare for such publications. Physical characteristics: Year of publication: 1828. Publisher: Printing house of the Department of Public Education. Collectors of Rare Books: A unique publication of value as a monument of philology and cultural ties. Philologists and linguists: Useful for specialists in Slavic and Greek languages, as well as historians studying the cultural influence of Byzantium. Historians: The book will be of interest to those who study Slavic-Greek relations, the role of the church in cultural exchange and the evolution of the Church Slavonic language. An excellent example of philological work of the XIX century, rare and in demand among collectors and researchers.