74. ARMSTRONG, E. F., AND HILDITCH, T. P. Study of Catalytic Actions at Surfaces. I. Hydrogenation of Unsaturated Fats in the Liquid State in Presence of Nickel. Proc. Roy. Soc. (London), vol. 96-A, 1919, pp. 137-146; Chem. Abs., vol. 14, 1920, p. 142.

74. ARMSTRONG, E. F., AND HILDITCH, T. P. Study of Catalytic Actions at Surfaces. I. Hydrogenation of Unsaturated Fats in the Liquid State in Presence of Nickel. Proc. Roy. Soc. (London), vol. 96-A, 1919, pp. 137-146; Chem. Abs., vol. 14, 1920, p. 142.