@misc{indiciaed28ffb880054,
  title = {Portrayal of drainage and vegetation on topographic maps},
  author = {W.J. Schneider and J. C. Goodlett},
  year = {1962},
  doi = {10.3133/ofr62121},
  url = {https://pubs.usgs.gov/publication/ofr62121},
  note = {Source identifier: ofr62121}
}