"Big Soviet Encyclopedia" (NR) is one of the largest and most authoritative publications, which collected information from various fields of knowledge: from natural sciences to culture and art. Created by Naukova Ukraina publishing house, the encyclopedia includes thousands of articles, illustrations, tables and maps. It became an integral part of the home library of every Soviet family and served as a source of knowledge for millions of readers. The "Great Soviet Encyclopedia" is an important cultural symbol of the communist era and a reflection of the scientific and technical achievements of the Soviet Union.