TY - RPRT TI - Mount St. Helens erupts again: Activity from September 2004 through March 2005 AU - Jon J. Major AU - William E. Scott AU - Carolyn Driedger AU - Dan Dzurisin PY - 2005 DO - 10.3133/fs20053036 UR - https://pubs.usgs.gov/publication/fs20053036 ID - fs20053036 ER -