TY  - RPRT
TI  - GIS database and discussion for the distribution, composition, and age of Cenozoic volcanic rocks of the Pacific Northwest Volcanic Aquifer System study area
AU  - David R. Sherrod
AU  - Mackenzie K. Keith
PY  - 2018
DO  - 10.3133/ofr20181030
UR  - https://pubs.usgs.gov/publication/ofr20181030
ID  - ofr20181030
ER  -