ABUBAKAR N. USMAN. JOB KNOWLEDGE AND COMPETENCY AS PREREQUISITES FOR EFFECTIVE AND EFFICIENT SERVICE DELIVERY OF LIBRARIANS: A CASE STUDY OF THREE COLLEGES OF NURSING SCIENCES IN NIGER STATE. Lafia Journal of Library and Information Science, [S. l.], v. 5, n. 1, p. 57–63, 2025. Disponível em: https://lalibjournals.org/index.php/LJLIS/article/view/195. Acesso em: 2 nov. 2026.