TY  - RPRT
TI  - Caldera collapse in the Galápagos Islands, 1968
AU  - T. Simkin
AU  - K. A. Howard
PY  - 1970
DO  - 10.1126/science.169.3944.429
UR  - https://pubs.usgs.gov/publication/70010084
ID  - 70010084
ER  -