@misc{indiciaeb49ca373af9d,
  title = {Potential-field geophysical programs for IBM compatible microcomputers, version 1.0; executable code, programs A-G},
  author = {Richard H. Godson and Margaret R. Mall},
  year = {1989},
  doi = {10.3133/ofr89197b},
  url = {https://pubs.usgs.gov/publication/ofr89197B},
  note = {Source identifier: ofr89197B}
}