Oguche, Moses Ojonugwa, National Veterinary Research Institute, Vom, Plateau State, Nigeria
Ogun, Mautin L., Department of Botany, Lagos State University, Ojo, Lagos, 102101, Nigeria
Oguya, Francis, Technical University of Kenya
Ogwah, Christoper, Department of Geology, Ebonyi State University, Ebonyi State, Nigeria
Ogwah, Christopher, Department of Geology, Ebonyi State University, Abakaliki Ebonyi State Nigeria
Ogwah, Christopher, Department of Geology, Ebonyi State University, Abakaliki Ebonyi State, Nigeria
Ogwah, Christopher, Department of Geology, Faculty of Sciences, Ebonyi State University, Abakaliki. P.M.B. 053, Ebonyi State, Nigeria
Ogwah, Christopher, Department of Geology, Faculty of Science Ebonyi State University, Abakaliki, Nigeria (Nigeria)
Ohene, Eric, Kwame Nkrumah University of Science and Technology
Ohwo, Odafivwotu, <p>Department of Geography and Environmental Management, Niger Delta University, Wilberforce Island, Bayelsa State, 560103, Nigeria</p>
Ojeh, Vincent N., Department of Geography, Taraba State University, Jalingo, 660213, Nigeria
Ojewumi, Anthony W., Department of Botany, Lagos State University, Ojo, Lagos, 102101, Nigeria
Ojewumi, Titus Kolawole, <p><em>Department of Demography and Social Statistics, Faculty of Social Sciences, Obafemi Awolowo University, Ile-Ife, </em><em>220003, Nigeria</em></p>
Ojha, P N, National Council for Cement and Building Materials, Ballabgarh, Haryana, India
Ojha, P. N., National Council for Cement and Building Materials, Ballabgarh, Haryana, India
Ojo, O. J., Department of Geology, Federal University, Oye Ekiti State, Nigeria
Okafor, Ogochukwu Anastasia, School of Business Education, Federal College of Education (Technical), Umunze, Anambra State, Nigeria
Okangny, Dédé, Laboratory of Hydrobiology and Aquaculture (LHA), Faculty of Agricultural Sciences, University of Abomey-Calavi,01BP 526 Cotonou-Benin
Okara, G. O., Department of Physics, Nasarawa State University, Keffi, P.M.B. 1022, Nasarawa State, Nigeria
Okassa, Mireille Belle Mbou, Laboratory of Biodiversity and Animal Ecology, Faculty of Science and Technology, Marien Ngouabi University, BP 69, Republic of Congo
Okerekeoti, Chinedu U., Department of Accountancy, Nnamdi Azikiwe University, Awka, Nigeria
Okiotor, M. Edirin, Department of Marine Geology, Nigeria Maritime University, Okerenkoko, Warri South, Delta State, 332105, Nigeria
Okojie, V. U., Department of Chemistry, Ambrose Alli University Ekpoma, Nigeria
Okonji, Patrick Sunday, Department of Business Administration Faculty of Management Sciences University of Lagos, Akoka-Yaba, Lagos State
Okonkwo, S. I., Federal University of technology, Owerri, P.M.B. 1526, Owerri, Imo State, Nigeria

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