"Great Soviet Encyclopedia" is one of the largest publications in the world, which covers a wide range of knowledge in various fields of science, culture, technology and history. This unique encyclopedia was published in 65 volumes and was published in the period from 1926 to 1947. The uniqueness of the "Great Soviet Encyclopedia" lies in the high quality of information, the wide coverage of topics and the invaluable materials it stores. Each volume of the encyclopedia contains a large number of articles, illustrations, diagrams and tables, which allows readers to get a full picture of world science and culture. "Great Soviet Encyclopedia" is an integral part of the history of the USSR and an important source of knowledge for modern researchers.