"Bolsha Soviet Encyclopedia" (MS) is one of the largest publications of the 20th century, which includes a wide range of knowledge in various fields: from history and culture to science and technology. First published in 1926, the encyclopedia has gone through ten editions and includes thousands of articles, illustrations and maps. At one time, this encyclopedia was considered the most authoritative source of knowledge in the Soviet Union, and its publication was very popular among readers around the world. The Great Soviet Encyclopedia (MS) is a treasure trove of information that still remains a valuable source of knowledge for millions of people.