"Bolsha Soviet Encyclopedia (BL)" is a huge well-known general education publication consisting of numerous volumes containing information on various scientific, technical, cultural and other aspects of life. Created in the USSR, the encyclopedia includes materials from various fields of knowledge, ranging from history and geography to natural sciences and art. The "Great Soviet Encyclopedia" was an important source of information not only for the academic world, but also for a wide range of readers. This edition reflects the cultural, scientific and historical realities of the times of its existence, and also serves as a kind of document of the era. "Big Soviet Encyclopedia" is not just a source of knowledge, but a real symbol of solidarity and strength of modern socialist society.