@misc{indiciae49d77dd5102a,
  title = {The use of sodium polytungstate in heavy mineral separations},
  author = {M.E. Torresan},
  year = {1987},
  doi = {10.3133/ofr87590},
  url = {https://pubs.usgs.gov/publication/ofr87590},
  note = {Source identifier: ofr87590}
}