@misc{indiciae72a327da1fde,
  title = {Potential-field geophysical programs for IBM compatible microcomputers, version 1.0; executable code, programs P-V},
  author = {Richard H. Godson and Margaret R. Mall},
  year = {1989},
  doi = {10.3133/ofr89197d},
  url = {https://pubs.usgs.gov/publication/ofr89197D},
  note = {Source identifier: ofr89197D}
}