R., Auta, Department of Biochemistry, Kaduna State University, Kaduna. (Nigeria)
R., Ekele, Department of Pure and Industrial Chemistry, University of Jos (Nigeria)
R., Kadhum, Environmental Analysis Department, Ministry of Environment, Baghdad (Iraq)
R. E., Mdachi, Kenya Agricultural Research Institute, Trypanosomiasis Research Centre, Kikuyu (Kenya)
R. F., Njoku-Tony, Department of Environmental Technology, School of Engineering and Engineering Technology, Federal University of Technology, PMB. 1526, Owerri (Nigeria)
R. I., Onyenekwe, Department of Crop Science and Biotechnology, Faculty of Agriculture and Veterinary Medicine, Imo State University, P.M.B. 2000, Owerri (Nigeria)
R. J., Ombugadu, Department of Biological Sciences, Nasarawa State University, Keffi. (Nigeria)
R. P. K., Wells, Surface chemistry and catalysis Research Group, University of Aberdeen, AB24 3UE, Aberdeen (United Kingdom)
R. U., Aliyu, Department of Biochemistry, Usmanu Danfodiyo University, P.M.B. 2346, Sokoto. (Nigeria)
R. U., Oyeneke, Department of Agricultural Economics, Extension and Rural Development, Imo State University Owerri (Nigeria)
Rabiu, A., Department of Physics, Federal University, Kashere, Gombe State, Nigeria.
Radecka, I., Department of Biology, Chemistry and Forensic Science, School of Science and Engineering, University of Wolverhampton, WV1 1LY, United Kingdom.
Ruma, M.M., Department of Geography, Faculty of Natural and Applied Science, Umaru Musa Yar’adua University, Katsina- Nigeria (Nigeria)
Rumah, A.A., Deaprtment of Geography, Nassarawa State University, Keffi, Nigeria.
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