National standard reference data series, NSRDS-NBS. 28. Molten salts, v. 2: sec. 1, Electrochemistry of molten salts, Gibb free energies and excess free energies from equilibrium-type cells [with list of references, by] G. J. Janz and Chr. G. M. Dijkhuis; sec. 2, Surface tension data [with list of references, by] G. J. Jan [and others].