@misc{indiciae0631c96d57a9,
  title = {Preliminary isostatic gravity map of the Sonoma volcanic field and vicinity, Sonoma and Napa Counties, California},
  author = {V.E. Langenheim and C. W. Roberts and C.A. McCabe and D.K. McPhee and J. E. Tilden and R.C. Jachens},
  year = {2006},
  doi = {10.3133/ofr20061056},
  url = {https://pubs.usgs.gov/publication/ofr20061056},
  note = {Source identifier: ofr20061056}
}