"Big Soviet Encyclopedia" is a publication that has become a real encyclopedia for generations of Soviet citizens. First published in 1926, this encyclopedia became known for its broad subject base and detailed information on a wide variety of fields of knowledge. The "Great Soviet Encyclopedia" included thousands of articles, illustrations, diagrams and maps that revealed all aspects of science, technology, culture and history in a unique way. This publication became an integral part of the cultural heritage of the former USSR and provided useful knowledge to millions of people.