DETERMINATION OF WORK INDEX OF GRAPHITE FROM SAMAN-BURKONO (NIGERIA) USING MODIFIED BOND’S METHOD. Nigerian Journal of Technology, [S. l.], v. 38, n. 3, p. 609–613, 2019. Disponível em: https://nijotech.com/index.php/nijotech/article/view/2049. Acesso em: 16 apr. 2026.