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| | Endo |
 | | Tokachi-dake Volcano precursory times were estimates from an amplitude-variation figure in Ikeda and others (1990). |
 | | Ikeda, Y., Katsui, Y., Nakagawa, M., Kawachi, S., Watanabe, T., Fujibayashi, N., Shibata, T., and Kagami, H., 1990, Petrology of the 1988-1989 essential ejecta and associated glassy rocks of Tokachi-dake volcano in central Hokkaido, Japan: Bulletin of the Volcanological Society of Japan, v. |
 | | Okada, H., Nishimura, Y., Miyamachi, H., Mori, H., and Ishihara, K., 1990, Geophysical significance of the 1988-1989 explosive eruptions of Mt. Tokachi, Hokkaido, Japan: Bulletin of the Volcanological Society of Japan, v. |
| pubs.usgs.gov /pinatubo/endo (7194 words) |
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