@misc{indiciae17ef6bfb55cc,
  title = {Occurrence of manganese in eastern Aroostook County, Maine},
  author = {Walter S. White},
  year = {1943},
  doi = {10.3133/b940e},
  url = {https://pubs.usgs.gov/publication/b940E},
  note = {Source identifier: b940E}
}