@misc{indiciaeebf8ccd0b196,
  title = {Principal facts for gravity stations in Maricopa, Mojave, Yavapai, and Yuma Counties, Arizona},
  author = {Jeffrey C. Wynn and James K. Otton and Ronald A. Stawicki},
  year = {1978},
  doi = {10.3133/ofr78207},
  url = {https://pubs.usgs.gov/publication/ofr78207},
  note = {Source identifier: ofr78207}
}