TY  - RPRT
TI  - Chronology and references of volcanic eruptions and selected unrest in the United States, 1980-2008
AU  - Angela K. Diefenbach
AU  - Marianne Guffanti
AU  - John W. Ewert
PY  - 2009
DO  - 10.3133/ofr20091118
UR  - https://pubs.usgs.gov/publication/ofr20091118
ID  - ofr20091118
ER  -