2914.     RUBINFELD, J.  [Liquefaction of Coal.]  Allgem. österr. chem. u. tech.-Ztg., vol. 43, 1925, p. 151; Chem. Abs., vol. 20, 1926, p. 1313.

        Brief discussion of 4 methods by which motor fuel can be produced:  Low- and high-temperature carbonization of coal, Synthol process, Bergius process, and Badische process.