"Greater Soviet Encyclopedia" is one of the largest publications in the world, which consists of 30 volumes and about 65 thousand articles. It was first published in 1926 and was published until 1991. The encyclopedia contains a huge amount of knowledge from various fields - from history and geography to science and art. This is an extremely valuable source of information that reflects the outlook and culture of Soviet society at that time. The "Greater Soviet Encyclopedia" is not only a reference guide, but also a kind of reflection of the ideas and values of the past era.