"Great Soviet Encyclopedia" (LE) is a large universal encyclopedia published in the Union of the SSR from 1926 to 1991. Each volume of the Great Soviet Encyclopedia contains a huge amount of information about the most diverse aspects of life, culture, science, technology, etc. The encyclopedia contains many illustrations, diagrams, maps and tables that help to better understand the material. The Great Soviet Encyclopedia is famous for its extensiveness and detailed approach to each topic. It contains a huge number of facts, data and articles from all possible fields of knowledge. Therefore, this encyclopedia is a reliable source of information for both research and familiarization with various topics and issues.