"Big Soviet Encyclopedia" is the largest Russian-language general encyclopedia published in the Soviet Union from 1926 to 1991. In its 31 volumes, it covers a wide range of knowledge from various fields of science, technology, culture, history, and other fields of human knowledge. Each volume of the encyclopedia contains thousands of articles, illustrations and tables, making it an inexhaustible source of information for readers of any age and profession. "The Great Soviet Encyclopedia" is a recognized authority and an indispensable reference for everyone who is interested in deep knowledge about the world around us.