G.C. Anyanwu, EVANGELINA. O. O. MINERALOGICAL AND CHEMICAL COMPOSITION EVALUATION OF LIGNITE COAL FROM IHIOMA ORLU, IMO STATE OF NIGERIA. as [Internet]. 2022Apr.18 [cited 2024Nov.16];8(4):7-13. Available from: http://webmail.ijrdo.org/index.php/as/article/view/5008