"Great Soviet Encyclopedia" is one of the largest and most authoritative encyclopedic publications of the last century. The first book of this encyclopedia was published in 1926, and it was completed in 1991. The entire circulation of the encyclopedia consisted of 100 volumes, in which a huge number of illustrations, tables and texts were collected, covering all areas of knowledge, from natural sciences and social sciences to culture and art. "Great Soviet Encyclopedia" is considered an extremely valuable source for obtaining educational information about the history, culture and science of the former Union. The book became an encyclopedic classic that remains a valuable resource for researchers and the general public to this day.