@misc{indiciae8dc66f9a7de4,
  title = {GIS database and discussion for the distribution, composition, and age of Cenozoic volcanic rocks of the Pacific Northwest Volcanic Aquifer System study area},
  author = {David R. Sherrod and Mackenzie K. Keith},
  year = {2018},
  doi = {10.3133/ofr20181030},
  url = {https://pubs.usgs.gov/publication/ofr20181030},
  note = {Source identifier: ofr20181030}
}