272.    BÓBR, W.  [Gaseous and Solid-Fuel Substitutes.]  Przeglad gorniczo-hutniczy, vol. 29, 1937, pp. 383-397; Chem. Zentralb., 1937, II, p. 4142; Chem. Abs., vol. 33, 1939, p. 6020.

                  Review of use of motor fuels coming from sources other than petroleum.