"Great Soviet Encyclopedia (UN)" is a unique publication that was published in the Soviet period and is considered one of the largest dictionary publications in the world. The total volume of the encyclopedia is more than 65 volumes, which contain a huge amount of knowledge from various fields of science, technology, culture, art, history and many other spheres of life. The "Great Soviet Encyclopedia" presents articles by famous Soviet and world experts, which give the reader the opportunity to get acquainted with significant events and phenomena of the scientific and cultural world of the 20th century. The publication is noted for the depth and volume of information presented in it, as well as for the exquisite illustrative material that helps to better assimilate the educational material. "Great Soviet Encyclopedia (UN)" is not only a source of knowledge, but also an important evidence of the cultural and historical development of Soviet society. It is an invaluable resource for researching and studying the past and developing a deep understanding of the cultural heritage of past generations.