MAKOBA, M. ., MOALOSI, T. ., AGACHI, P.- Şerban, MUZENDA, E. ., & MAMVURA, T. A. . (2020). CHARACTERIZATION OF BOTSWANA COAL FROM TWO COAL FIELDS: MABESEKWA AND MMAMABULA TO DETERMINE ITS COAL RANK. Studia Universitatis Babeș-Bolyai Chemia, 65(2), 243–256. https://doi.org/10.24193/subbchem.2020.2.20