Rorong, Johnly Alfreds, Department of Chemistry, Faculty of Mathematical and Sciences University of Sam Ratulangi, Jl. Kampus Unsrat Kleak Manado, North Sulawesi (Indonesia)
Rosadi, Bustomi, Agricultural Engineering Department, Lampung University, Jl Sumantri Brojonegoro No. 1 Bandarlampung 35145, INDONESIA. (Indonesia)
Rosjidi, Mochamad, The National Research and Innovation Agency, Jakarta Pusat 10340, Indonesia (Indonesia)
Rosniawati, Santi, Department of Agronomy, Faculty of Agriculture, Universitas Padjadjaran Jl. Raya Bandung – Sumedang, Km. 21 Jatinangor Sumedang, Indonesia (Indonesia)
Rusastra, I Wayan, Pusat Penelitian dan Pengembangan Sosial Ekonomi, Badan Penelitian dan Pengembangan Pertanian, Departemen Pertanian (Indonesia)
Russell, Craig, School of Earth and Geographycal Science, The University of Western Australia, Crawley 6009 (Australia)

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