@misc{indiciae508eaa41e901,
  title = {Zinc in the United States, exclusive of Alaska and Hawaii},
  author = {Edwin Thor McKnight and Allen Van Heyl and William Louis Newman},
  year = {1962},
  doi = {10.3133/mr19},
  url = {https://pubs.usgs.gov/publication/mr19},
  note = {Source identifier: mr19}
}