Umoren EE, Okon G. Roles of Librarians in Preservation and Conservation of Information Resources in the Nigerian University Libraries: World Atlas Journal of Library and Information Science, Vol. 4, No. 2. ADI [Internet]. 2020 Aug. 5 [cited 2026 Mar. 22];:19-31. Available from: https://publications.afrischolar.net/index.php/home/article/view/446