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80. ----------------. [ARMSTRONG, E. F., AND HILDITCH, T. P.] Study of Catalytic Actions at Surfaces. VII. Influence of Pressure on the Rate of Hydrogenation of Liquids in Presence of Nickel. Proc. Roy. Soc. (London), vol. 100-A, 1921, pp. 240-252; Chem. Abs., vol. 16, 1922, p. 1348.