URBONAS, Viktoras. On Development of Acquisition of Microcopies in Large Libraries of the Lithuanian S.S.R. Knygotyra, [S. l.], v. 8, n. 1, p. 37–44, 1970. Disponível em: https://www.journals.vu.lt/knygotyra/article/view/26969.. Acesso em: 29 apr. 2024.