@misc{indiciaef1c0953ddbb7,
  title = {GRIDVECTOR (version 1); an ARC/INFO AML program to extract linear features from a gray-scale image of a paper geologic map},
  author = {F.M. Persits},
  year = {1997},
  doi = {10.3133/ofr97713},
  url = {https://pubs.usgs.gov/publication/ofr97713},
  note = {Source identifier: ofr97713}
}