@misc{indiciae5999e982ed70,
  title = {A collection of MAPGEN command files suitable for hacking},
  author = {James M. Robb},
  year = {1989},
  doi = {10.3133/ofr89653},
  url = {https://pubs.usgs.gov/publication/ofr89653},
  note = {Source identifier: ofr89653}
}