title: The application of anion-selective membrane electrodes in pharmaceutical analysis. II. Determination of cyanocobalamin in pharmaceutical preparations.
mesh_terms: D004566:Electrodes; D008567:Membranes, Artificial; D008722:Methods; D010084:Oxidation-Reduction; D014805:Vitamin B 12 / Q000032:analysis*
chemical_list: D008567:Membranes, Artificial; D014805:Vitamin B 12