Waitt, R. B., Mastin, L. G., and Miller, T. P., 1995, Ballistic showers during Crater Peak eruptions of Mount Spurr volcano, Summer 1992: in Keith, T. E. C., (ed.), The 1992 eruptions of Crater Peak Vent, Mount Spurr volcano, Alaska, U.S. Geological Survey Bulletin B 2139, p. 89-106.
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