O., Hidayatulfathi, Faculty of Health Sciences, Universiti Kebangsaan Malaysia
O., Kurbanov
Oanh, N.T., College of Land Management and Rural Development, Viet Nam National University of Forestry, Vietnam
Ogao, P., College of Computing and Information Science, Makerere University Kampala, Uganda
Olpenda, A.S., Department of Forest Resources Management, College of Forestry and Environmental Science, Central Mindanao University, Bukidnon, 8710 Philippines
Omran, A.F., Department of Science and Mathematical Engineering, Faculty of Petroleum and Mining Engineering, Suez University- Saleh Neseem Road, El Zaiteiat-Ataqa, Suez, Egypt
Onchang, R., Department of Environmental Science, Faculty of Science, Silpakorn University (Sanamchandra Campus), Thailand
Onojeghuo, A.O., Department of Surveying and Geoinformatics, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria
Onojeghuo, A.R., Department of Surveying and Geoinformatics, NnamdiAzikiwe University, Awka, Anambra State, Nigeria
Orangi, R., Khavaran Institute of Higher Education, Mashhad, Iran
Ordoñez, C.A., School of Graduate Studies, Mapua University, 658 Muralla St., Intramuros, Manila 1002, Metro Manila, Philippines
Ormukov, Ch, American University of Central Asia, 7/6 Aaly Tokombaev Street, Bishkek, Kyrgyz Republic 720060
Osman, N.S., Braintree Technologies Sdn Bhd, Block G1, UPM - MTDC Technology Centre, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
Oszwald, J., Department of Geography, Rennes 2 University, Rennes, France
Ouchra, H., Laboratory of Information Technology and Modeling LTIM, Hassan II University, Faculty of Sciences Ben M'sik Casablanca, Morocco
Owolabi, K., eHealth Africa System, 4-6 Independence Road, Kano, Nigeria