Obeng, Camara Kwasi, Department of Economics, University of Cape Coast, Cape Coast, Ghana
Obersteiner, Michael, International Institute for Applied Systems Analysis, Austria
Ogunjirin, Olusola Adetola, National Centre for Agricultural Mechanization (NCAM) (Nigeria)
Oyedokun, Jelili Aremu, National Centre for Agricultural Mechanization (NCAM) (Nigeria)
Oyelade, Opeyemi Adeniyi, National Centre for Agricultural Mechanization (NCAM) (Nigeria)

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