"Big Soviet Encyclopedia" is a unique publication that was created for more than three decades in the Soviet Union. This encyclopedia included reviews of various aspects of knowledge in the fields of science, history, technology, culture, art and many other areas of life. In terms of volume and depth of content, the "Great Soviet Encyclopedia" occupied a special place among popular scientific publications of the world. Every page of this encyclopedia was filled with interesting and useful information that reflected the spirit and mood of the time. The "Great Soviet Encyclopedia" has become a real treasure for readers of different generations, providing them with a broad general outlook and in-depth knowledge.