Oku, Effiom, Alexandre Martins Abdao dos Passos, Simone S. Quintino, Nkiruka Celestina Odoh, and Titilayo Bolane Olowookere. “Soil Fertility Status of Soils of Sudano-Sahelian and Humid Forest Zones of West Africa and Some Soil Management Strategies for Smallholder Farms”. EQA - International Journal of Environmental Quality 46 (January 1, 2021): 25–36. Accessed November 21, 2024. https://eqa.unibo.it/article/view/12745.