@misc{indiciae888141dac84c,
  title = {Status of engineering geologic and environmental geologic mapping in the United States},
  author = {Dorothy H. Radbruch},
  year = {1971},
  doi = {10.1007/bf02635376},
  url = {https://pubs.usgs.gov/publication/70227341},
  note = {Source identifier: 70227341}
}