O. M., Apata O. M., Ekiti State University
O. Olayemi, Simon-Oke, The Federal University of Technology, Akure, Nigeria
O.A, Ajala, Department of Pure and Applied Mathematics Ladoke Akintola University of Technology, Ogbomoso
O.A, Fasoranbaku, Statistics Department The Federal University of Technology, Akure
O.F, Adesiyan, Obafemi Awolowo University Teaching Hospital, Ile-Ife
O.G, Udoaka, Akwa Ibom State University
O.I, Popoola, Department of Physical Sciences, Oduduwa University, Ife, Nigeria
O.I, Shtompel, Institute of Bioorganic Chemistry and Petrochemistry of NAS of Ukraine.
O.M, Olayiwola, Federal University of Agriculture, Abeokuta, Nigeria
O.O., Ajide, University of Ibadan
O.T, Arulogun, Dept. of Computer Sc. & Eng. Ladoke Akintola Univ. of Tech Ogbomoso, Nigeria
O.V., Volyansky, Peoples’ Friendship University of Russia, Miklukho-Maklaya street, 6, 117198 Moscow
Obaid, Firas Jawad , Department of Mathematics, College of Education, University of Al-Qadisiyah, Diwaniya-Iraq
Obaidullah, Md., Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
Obeng-Akrofi, George, 3Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, Iowa, USA
Obi, Monica
Obiamaka, Umejiaku, Nneka, Lecturer, Faculty of Law Nnamdi Azikiwe University, Awka. Anambra State
Obiamalu, Greg O., Department of Linguistics, Nnamdi Azikiwe University, Awka, Nigeria.
Obidat, Atef, Balga Applied University, Al-huson
Obinna, O., 1Physical/Theoretical Chemistry Unit, University of Calabar, Calabar, CRS, Nigeria
Obmenennaya, Alexandra, A.N. Kosygin Russian State University (Technology. Design. Art)
Obradovic, Dragan , Department of Mathematics and Informatics, School "Agricultural High School" Pozarevac – Serbia
Obradovic, Dragan , Elementary school ”Jovan Cvijic”, Kostolac-Pozarevac, Teacher of Mathematics, Serbia
Obradovic, Dragan , Elementary school "Jovan Cvijic", Kostolac-Pozarevac, teacher of Мathematics, Serbia
Obradovic, Dragan , Elementary school “Jovan Cvijic”, Kostolac-Pozarevac, Teacher of Mathematics, Serbia

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