@misc{indiciae331066ca0383,
  title = {Mineralogical map showing the distribution of selected minerals in nonmagnetic fraction of heavy-mineral concentrates from stream sediments, Petersburg area, Southeast Alaska},
  author = {R. B. Tripp and John B. Cathrall},
  year = {1983},
  doi = {10.3133/ofr83420x},
  url = {https://pubs.usgs.gov/publication/ofr83420X},
  note = {Source identifier: ofr83420X}
}