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Abdullah, Rijal and Satria, Hengki Ade (2017) The Analyzed of Tar as Waste Material of Bituminous Coal Gasification by using Gaschromatography. In: 4th International Conference on Technical and Vocation Education and Training (TVET): Technical and Vocational Education and Training for Sustainable Societies, 9-11 November 2017, Padang.