648.    ---------------.   [CROWELL, J. H., BENSON, H. E., FIELD, J. H., AND STORCH, H. H.]  Fischer-Tropsch Oil-Circulation Process.  Ind. Eng. Chem., vol. 42, No. 11, 1950, pp. 2376-2384.

      See abs. 647.

     CRUMLEY, P.  See abs. 1326a.