"Great Soviet Encyclopedia (UB)" is the world's largest general scientific encyclopedia, which was published in Ukraine. The edition consists of 65 volumes. It includes articles from various fields of knowledge: from history and culture to natural sciences and technology. The abstracts of the articles contain relevant information related to Ukraine. This encyclopedia is an extraordinary expanded version of the traditional Bolshaya Soviet encyclopedia, which has been available since 1926. It is noted for its high scientific level, volume and well-chosen material. The "Great Soviet Encyclopedia" has become an integral part of the cultural heritage of Ukraine, preserving and supplementing knowledge for future generations.