IkhajiagbeB., MusaS. I., and OkemeJ. O. “EFFECT OF CHANGES IN SOIL CATION EXCHANGE CAPACITY ON THE RECLAMATION OF LEAD BY ELEUSINE INDICA (L.) GAERTN”. FUDMA JOURNAL OF SCIENCES, Vol. 3, no. 4, Apr. 2023, pp. 176 -83, https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1636.