@misc{indiciae71615d611566,
  title = {Bog iron formation in the Nassawango Creek watershed, Maryland, USA},
  author = {O.P. Bricker and Wayne L. Newell and N.S. Simon},
  year = {2004},
  url = {https://pubs.usgs.gov/publication/70026452},
  note = {Source identifier: 70026452}
}