@misc{indiciaec78868d5b565,
  title = {Procedures for determining drainage areas using a digitizer, digital computer, and topographic maps},
  author = {R.L. Gold and Dan Winkless},
  year = {1988},
  doi = {10.3133/wri864083},
  url = {https://pubs.usgs.gov/publication/wri864083},
  note = {Source identifier: wri864083}
}