@misc{indiciae793bc6e55cd5,
  title = {Geology and ore deposits of the Cottonwood-American Fork area, Utah},
  author = {F. C. Calkins and B. S. Butler and V. C. Heikes},
  year = {1943},
  doi = {10.3133/pp201},
  url = {https://pubs.usgs.gov/publication/pp201},
  note = {Source identifier: pp201}
}