TY - RPRT TI - Volcano-Monitoring Instrumentation in the United States, 2008 AU - Marianne Guffanti AU - Angela K. Diefenbach AU - John W. Ewert AU - David W. Ramsey AU - Peter F. Cervelli AU - Steven P. Schilling PY - 2010 DO - 10.3133/ofr20091165 UR - https://pubs.usgs.gov/publication/ofr20091165 ID - ofr20091165 ER -