"Greater Soviet Encyclopedia (HL)" is a huge thematic reference book that was published in the USSR in the middle of the 20th century. It covers various branches of knowledge, ranging from natural sciences to social sciences and humanities. Each question or concept in the encyclopedia was considered in detail and objectively, using a huge number of illustrations, diagrams and tables. "Greater Soviet Encyclopedia" has become an indispensable source of knowledge for a wide range of readers. She covered not only science and technology, but also various aspects of culture, history, geography and much more. Each volume of the encyclopedia was carefully compiled and worked in conjunction with other volumes to supplement and deepen information. Thanks to a wide range of topics and an analytical approach to the presentation of information, the "Greater Soviet Encyclopedia" has become a real treasure of general culture and knowledge. It turned into a symbol of the intellectual and cultural heritage of Soviet society.