Chukwuemeka C. Chukwuma, Chigozie L. Onuah, Kelechi T. Nwauche, Robinson Ohanador, Charles N. Chukwu, Effiong Enobong. Periodic Effects of Crude Oil Pollution on Some Nutrient Elements of Soils Treated Over a 90 Day Period Using Schwenkia Americana L. and Spermacoce ocymoides Burm. f. IJASRE [Internet]. 2018 Dec. 5 [cited 2024 Apr. 26];4(12):7-15. Available from: https://ijasre.net/index.php/ijasre/article/view/796