**Big Soviet Encyclopedia (T)** is a huge publication in twenty volumes, which became an important source of knowledge for generations of Soviet citizens. The encyclopedia includes reviews of culture, science, technology, history, geography, and other fields of knowledge that form the general basis of science and education. Each volume of the Soviet Encyclopedia was carefully selected and compiled by the best Soviet scientists and specialists in their field. The publication was created to provide access to important information about world heritage and scientific achievements for a wide range of readers. Each volume of the encyclopedia is an addition to previous editions, which makes this public resource indispensable for everyone interested in both general information about the world and specific aspects of science and culture. The Great Soviet Encyclopedia (T) is not only an encyclopedic reference book, but also a kind of window into the world of knowledge and culture of the Soviet period.