APPLICATION OF k0 -INSTRUMENTAL NEUTRON ACTIVATION ANALYSIS FOR DETERMINATION OF MAJOR AND TRACE ELEMENTS IN SOME MANGANESE MINERALS. GeolMac [Internet]. 2018 Dec. 17 [cited 2025 Nov. 4];32(2):159-64. Available from: https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/2494