"Great Soviet Encyclopedia" is a huge and detailed encyclopedia, which was published in the USSR in 1926-1990. In total, she has more than 100,000 articles and more than 30,000 illustrations. It is one of the largest publications in the world, which covers various fields of knowledge - from history, geography and culture to natural sciences and technology. Each article is written by highly qualified authors and includes review material, figures and tables. The "Great Soviet Encyclopedia" has long remained a relevant source of information for researchers, students and all those interested in a wide variety of knowledge. This edition is an important historical document that reflects information and approaches of Soviet society to various aspects of life. "Great Soviet Encyclopedia" is an excellent reference source and a symbol of the synthesis of world culture and science in the past.