@misc{indiciae8f19db116562,
  title = {Gold contents of 469 outcrop and 1466 B-horizon soil samples from the northwestern part of the Duluth Complex, northeastern Minnesota},
  author = {J. B. McHugh and H. V. Alminas},
  year = {1991},
  doi = {10.3133/ofr91293},
  url = {https://pubs.usgs.gov/publication/ofr91293},
  note = {Source identifier: ofr91293}
}