@misc{indiciaef1a4c3ba6b1a,
  title = {Standards for illustrations in reports of the U.S. Geological Survey, Water Resources Division},
  author = {Robert A. Miller and Barbara H. Balthrop},
  year = {1987},
  doi = {10.3133/70039551},
  url = {https://pubs.usgs.gov/publication/70039551},
  note = {Source identifier: 70039551}
}