1. Hill, R. A., , , Geochemical patterns in Coachella Valley, , Trans. Amer. Geophys. Union, , Part I, pp. 46– -49 , 1940, ; also Salts in irrigation waters, Trans. Amer. Soc. Civ. Eng., v. 107, pp. 1,478-1,493, 1942.
2. Graphical methods for indicating the mineral character of natural waters;Langelier;J. Amer. W. W. Assn.,1942
3. The geochemical interpretation of water analyses;Chase Palmer;U. S. Geol. Surv., Bull.,1911
4. California Div. Water Resources, Bull.;Scofield,1933
5. Criteria for recognition of sea-water in ground-waters;Revelle;Trans. Amer. Geophys. Union, Part III,1941