TY  - RPRT
TI  - Geology of El Chichon volcano, Chiapas, Mexico
AU  - W. A. Duffield
AU  - R.I. Tilling
AU  - R. Canul
PY  - 1984
UR  - https://pubs.usgs.gov/publication/70014011
ID  - 70014011
ER  -