"Great Soviet Encyclopedia (OZ)" is an encyclopedic publication that has become a symbol of Soviet culture and education. Arranged according to the principle of general systematization of knowledge, this encyclopedia contains an extensive overview of various fields of science, technology, art, culture and history. "Big Soviet Encyclopedia" includes a large number of articles, illustrations, diagrams and tables that help readers get a full volume of information from various fields of knowledge. This encyclopedia is not only a source of factual data, but also an important monument of the era, which helps to understand the history and culture of the former Soviet Union.