Kollie B. Dogba and Willis Oluoch-Kosura and Chepchumba Chumo, Economic Efficiency of Cassava Production in Nimba County, Liberia: An Output-Oriented Approach. journal = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology. November 2020, vol. 168(12). 168 - 174 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10011654.