Ohtake, Norikuni, Institute of Science and Technology, Niigata University (Japan)
Ohunakin, Olayinka S., The Energy and Environment Research Group (TEERG), Mechanical Engineering Department, Covenant University (Nigeria)
Ojeda, Gonzalo Adrián, Universidad Nacional del Nordeste, Facultad de Ciencias Exactas y Naturales y Agrimensura (Argentina)
Ojeda Contreras, Angel Javier, Centro de Investigación en Alimentación and Desarrollo (Mexico)
Ojeda-Portugal, James, Universidad Nacional de San Agustín de Arequipa (Peru)
Ojediran, John, Agricultural, Biosystems and Food Process Engi-neering laboratory, Dept. of Agricultural Engineering, Landmark University (Nigeria)
Ojo, Adedapo O., School of Strategy & Leadership, Coventry University (United Kingdom)
Ojo, Victoria, Department of Pasture and range Management, Federal University of Agriculture (Nigeria)
Ojo, Victoria, Department of Pasture and Range Management, Federal University of Agriculture, Abeokuta 110124, Nigeria (Nigeria)
Ojong, Felix Eja, Department of Sociology, University of Calabar (Nigeria)
Oka, I. Made Darma, Tourism Department, Politeknik Negeri Bali, Bukit Jimbaran (Indonesia)
Okafor, Vincent Chuks, Department of Economics, Nnamdi Azikiwe University (Nigeria)
Okawa, Yoki
Okeke, Francis, Department of Geoinformatics and Surveying, University of Nigeria (Nigeria)
Okeyika, Kenechukwu Okezie, Department of Economics, Nnamdi Azikiwe University (Nigeria)
Okka, Osman, Business Administration, KTO Karatay University (Turkey)
Okon, Okon G., Department of Botany, Akwa Ibom State University (Nigeria)
Okorn, Felix Tabi, Department of History and International Studies, University of Calabar (Nigeria)
Okoro, Chioma, Department of Finance and Investment Management, University of Johannesburg (South Africa)
Okoro, Ikechukwu, Department of Medical Biochemistry, David Umahi University of Health Sciences (Nigeria)
Okoro, Uzoma Gregory, Department of Mechanical Engineering, Federal University of Technology Minna (Nigeria)
Okpa, John Thompson, University of Calabar (Nigeria)
Oktaviana R., Shinta, Faculty of Computer Science, Universitas Indonesia (Indonesia)
Okuda, Atsuko
Okuda, Atsuko, United Nations Economic and Social Commission for Asia and the Pacific, Bangkok, Thailand (Thailand)

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