@misc{indiciaeb946909f3efc,
  title = {A precautionary note on the use of mixed solvents in soxhlet extraction procedures},
  author = {Alan A. Roberts and James George Palacas},
  year = {1973},
  url = {https://pubs.usgs.gov/publication/70160632},
  note = {Source identifier: 70160632}
}