EDUCATION ON MINERAL RAW MATERIALS THROUGH RISBRIEFCASE, AS A NON-CONVENTIONAL TEACHING TOOL. Natural Resources and Technology, [S. l.], v. 17, n. 2, p. 19–28, 2023. DOI: 10.46763/NRT23172019m. Disponível em: https://js.ugd.edu.mk/index.php/NRT/article/view/5995. Acesso em: 4 may. 2026.