“X-RAY FLOURESCENCE (XRF) ANALYSIS OF ROCK AND SOIL SAMPLES FROM A MAGNETIC INTRUSIVE ROCK IN OBA AKOKO, NIGERIA”. JOURNAL OF ADVANCES IN PHYSICS 11, no. 9 (June 15, 2016): 4043–4053. Accessed June 19, 2026. https://rajpub.com/index.php/jap/article/view/219.