@misc{indiciaeb6dbdbc139f8,
  title = {Preliminary study of sources and processes of enrichment of manganese in water from University of Rhode Island supply wells},
  author = {William Dudley Silvey and Herbert E. Johnston},
  year = {1977},
  doi = {10.3133/ofr77561},
  url = {https://pubs.usgs.gov/publication/ofr77561},
  note = {Source identifier: ofr77561}
}