TY  - RPRT
TI  - The observational side of volcanology
AU  - David A. Swanson
AU  - Hans-Ulrich Schmincke
PY  - 1994
DO  - 10.1007/bf00304108
UR  - https://pubs.usgs.gov/publication/70017067
ID  - 70017067
ER  -