Egwu, G. N., Oluwole J. Okunola, and K. C. Ogwoke. “EFFECT OF ORGANIC MANURE AMENDMENT SOILS ON UPTAKE OF Pb, Cd AND Zn IN SPINACH”. FUDMA JOURNAL OF SCIENCES 2, no. 2 (March 17, 2023): 157 - 162. Accessed April 3, 2025. https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1361.