@misc{indiciaee419e022e0b9,
  title = {Principal facts for gravity stations and base-station net in the Silver City 1 degree x 2 degrees Quadrangle, Arizona and New Mexico},
  author = {Jeffrey C. Wynn},
  year = {1981},
  doi = {10.3133/ofr8140},
  url = {https://pubs.usgs.gov/publication/ofr8140},
  note = {Source identifier: ofr8140}
}