Arkhireyskyi, D. 2022 May 11. Object and subject of historical research in the coordinate system of traditional logic. Universum Historiae et Archeologiae = The Universe of History and Archeology = Універсум історії та археології = Универсум истории и археологии ISSN 2664-9950 (Print) ISSN 2707-6385 (Online). [Online] 4:2