@misc{indiciae234ca4b40693,
  title = {Concentrations of selected trace metals in shallow cores from the tidal Potomac River and Estuary: 1978 and 1979},
  author = {E. Ann Martin and J.L. Glenn and C. A. Rice and G. Harrison and E. Gum and M. Curington},
  year = {1981},
  doi = {10.3133/ofr811175},
  url = {https://pubs.usgs.gov/publication/ofr811175},
  note = {Source identifier: ofr811175}
}