@misc{indiciae6a8e01df71eb,
  title = {Concretionary manganese-iron oxides in streams and their usefulness as a sample medium for geochemical prospecting},
  author = {G.A. Nowlan},
  year = {1976},
  doi = {10.1016/0375-6742(76)90014-5},
  url = {https://pubs.usgs.gov/publication/70010886},
  note = {Source identifier: 70010886}
}