APPLICATION OF k0 -INSTRUMENTAL NEUTRON ACTIVATION ANALYSIS FOR DETERMINATION OF MAJOR AND TRACE ELEMENTS IN SOME MANGANESE MINERALS. Geologica Macedonica, [S. l.], v. 32, n. 2, p. 159–164, 2018. Disponível em: https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/2494. Acesso em: 5 may. 2026.