@misc{indiciae1681edec6e60,
  title = {Preliminary Isostatic Gravity Map of Joshua Tree National Park and Vicinity, Southern California},
  author = {V.E. Langenheim and Shawn Biehler and D.K. McPhee and C.A. McCabe and J. T. Watt and M.L. Anderson and B. A. Chuchel and P. Stoffer},
  year = {2007},
  doi = {10.3133/ofr20071218},
  url = {https://pubs.usgs.gov/publication/ofr20071218},
  note = {Source identifier: ofr20071218}
}