Physicochemical or geochemical, Toxicological

• Graham, J. A., Miller, F. J., Davies, D. W., Hiteshew, M. E., Walsh, L. C., (1985), Inhalation studies of Mt. St. Helens volcanic ash in animals. I. Introduction and exposure system, Environmental Research, 37(1), 61-71, 10.1016/0013-9351(85)90049-0