VIRÁGOS, M. CHANGE OF REGIME AND REGIME CHANGERS IN THE UNIVERSITY AND NATIONAL LIBRARY OF THE UNIVERSITY OF DEBRECEN: FROM THE CARD CATALOGUE TO THE ONLINE QUERY SYSTEMS. Gerundium, [S. l.], v. 11, n. 3-4, p. 123–142, 2020. DOI: 10.29116/gerundium/2020/3-4/7. Disponível em: https://ojs.lib.unideb.hu/gerundium/article/view/8654. Acesso em: 10 dec. 2022.