Graduate Program in Chemical Engineering.Dinçer, Salih.Bolat, Esen.2023-03-162023-03-161983.CHE 1983 B63https://digitalarchive.library.bogazici.edu.tr/handle/123456789/1456630 cm.Autoclaves.Coal liquefaction.Extraction (Chemistry)Solvent extraction.Extraction of lignites from Çan, Soma and Tunçbilek with donor and non-donor solvents in soxhlet extractor and autoclavexi,83 leaves;