@misc{indiciaeae700d59dc23,
  title = {Training geologists: A United States Geological Survey viewpoint},
  author = {Harold MacColl Bannerman and William Thomas Pecora},
  year = {1950},
  doi = {10.3133/cir73},
  url = {https://pubs.usgs.gov/publication/cir73},
  note = {Source identifier: cir73}
}