@misc{indiciae994615bb14f5,
  title = {Plastic standards for geochemical prospecting},
  author = {D. B. Hawkins and F. C. Canney and F. N. Ward},
  year = {1959},
  doi = {10.2113/gsecongeo.54.4.738},
  url = {https://pubs.usgs.gov/publication/70211606},
  note = {Source identifier: 70211606}
}