Oluwatoyin D. Kolawole and Oarabile Mogobe and Lapologang Magole, Political Economy of Integrated Soil Fertility Management in the Okavango Delta, Botswana. journal = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology. November 2013, vol. 83(11). 1073 - 1081 [viewed 21 September 2024]. Available from: https://publications.waset.org/pdf/9996671.