Physicochemical or geochemical

• Rubin, C. H., Noji, E. K., Seligman, P. J., Holtz, J. L., Grande, J., Vittani, F., (1994), Evaluating a fluorosis hazard after a volcanic eruption, Archives of Environmental Health: An International Journal, 49(5), 395-401, 10.1080/00039896.1994.9954992