"Great Soviet Encyclopedia (YAF)" is a majestic reference book that has combined knowledge from the most diverse fields of science, culture, history and many others. In terms of volume and depth of information, it has become a real treasury of knowledge for generations of readers. Thanks to this encyclopedia, they discovered new facts about the world, expanded their knowledge and studied the history and culture of their native country more deeply. "Great Soviet Encyclopedia" became not only a reference book, but also a symbol of cultural and scientific development in the Soviet Union.