@misc{indiciae9c72a5a888fa,
  title = {Kelsh plotter procedure},
  author = {Marvin Bertram Scher and Morris Mordecai Thompson},
  year = {1954},
  doi = {10.3133/cir357},
  url = {https://pubs.usgs.gov/publication/cir357},
  note = {Source identifier: cir357}
}