@misc{indiciae6ea721b6055c,
  title = {Economic geology of the Zipaquira quadrangle and adjoining area, Department of Cundinamarca, Colombia},
  author = {Donald H. McLaughlin and Marino Arce Herrera},
  year = {1970},
  doi = {10.3133/ofr70208},
  url = {https://pubs.usgs.gov/publication/ofr70208},
  note = {Source identifier: ofr70208}
}