DELINEATION OF MINERAL POTENTIAL ZONES OVER KEFFI – ABUJA AREA IN NORTH-CENTRAL, NIGERIA USING AEROMAGNETIC DATA. FJST [انترنت]. 31 ديسمبر، 2016 [وثق 17 مايو، 2026];2(2):106-10. موجود في: https://lafiascijournals.org.ng/index.php/fjst/article/view/60