This monograph studies the ideas of Slavic chroniclers and scholars, as well as contemporary German, Swedish and Italian authors of Early Modern times (The turn of the 15th-16th century-beginning of 18th century) about the emergence of the Slavic super-ethnic entity (ethno-genesis of the first level) and its succeeding division into separate Slavic entities (ethno-genesis of the second level) Includes bibliographic references and name index. Summary in English (pp. 312-314).