URBONAS, Viktoras. Roll Microfilms in Information Service. Knygotyra, [S. l.], v. 12, n. 5, p. 83–89, 1976. DOI: 10.15388/Knygotyra.1976.28025. Disponível em: https://www.journals.vu.lt/knygotyra/article/view/28025.. Acesso em: 27 sep. 2024.