@misc{indiciae06b395b8a27a,
  title = {User's manual for MAPGEN (UNIX version); a method of transforming digital cartographic data to a map},
  author = {G. I. Evenden and J.M. Botbol},
  year = {1985},
  doi = {10.3133/ofr85706},
  url = {https://pubs.usgs.gov/publication/ofr85706},
  note = {Source identifier: ofr85706}
}