Includes bibliographies and index.; Processes for direct coal liquefaction by solvent extraction / Y.C. Fu and Y.T. Shah -- Structure and properties of coal and the mechanism of coal liquefaction / J.A. Gray and Y.T. Shah -- Heteroatom removal during liquefaction / Y.T. Shah and S. Krishnamurthy -- Kinetic models for donor solvent coal liquefaction / Y.T. Shah, S. Krishnamurthy, and R.G. Ruberto -- Design of coal liquefaction reactors / Y.T. Shah, S.J. Parulekar, and N.L. Carr -- Refining of coal liquids / G.J. Stiegel ... {et al.}