Wonodi, A., and O. Ekpete. “IMPACT OF CEMENT PRODUCTION FACTORIES ON THE PHYSICAL AND CHEMICAL CHARACTERISTICS OF SOIL WITHIN PRODUCTION AREAS IN PORT HARCOURT METROPOLIS, RIVERS STATE, NIGER DELTA, NIGERIA”. Faculty of Natural and Applied Sciences Journal of Scientific Innovations, vol. 3, no. 1, Jan. 2022, pp. 50-59, https://fnasjournals.com/index.php/FNAS-JSI/article/view/21.