"Great Soviet Encyclopedia" is an encyclopedic publication that was created in the USSR in 1926 and was published in the period from 1926 to 1990. The book contained a huge amount of useful information from various fields of knowledge - from history, politics and culture to science, technology and natural history. The "Great Soviet Encyclopedia" was considered the main source of knowledge for Soviet citizens and was a symbol of the ideology of the communist regime. It consisted of numerous volumes and was available to a wide range of readers. Despite its ideological orientation, the "Great Soviet Encyclopedia" remains an important source of information about Soviet society and culture of the 20th century.