1252.    ----------------.  [GREBEL, A.] [Processes for the Manufacture of Liquid Hydrocarbons as Fuels for Explosion and Internal-Combustion Engines, Starting From Mineral Fuels.]  Chaleur et Ind., vol. 8, 1927, pp. 324-332; Chem. Abs., vol. 21, 1927, p. 2779.

       Critical review of recent processes, particularly the Bergius, Fischer-Tropsch and Prudhomme-Houdry.