@misc{indiciae930677018911,
  title = {Semiquantitative spectrographic analyses of samples from parts of Chesapeake, Delaware, and Hudson estuaries},
  author = {James Patrick Owens and Karl Stefansson and Leslie A. Sirkin},
  year = {1973},
  doi = {10.3133/ofr73216},
  url = {https://pubs.usgs.gov/publication/ofr73216},
  note = {Source identifier: ofr73216}
}