@misc{indiciae19ead536afed,
  title = {Research by the U.S. Geological Survey on organic materials in water},
  author = {Robert Andrew Baker},
  year = {1976},
  doi = {10.3133/cir744},
  url = {https://pubs.usgs.gov/publication/cir744},
  note = {Source identifier: cir744}
}