TY  - RPRT
TI  - Semiquantitative assessment of changing volcanic risk at Mount St. Helens, Washington
AU  - C. G. Newhall
PY  - 1984
DO  - 10.3133/ofr84272
UR  - https://pubs.usgs.gov/publication/ofr84272
ID  - ofr84272
ER  -