@misc{indiciae777f0a26edaa,
  title = {Geology of the Huahuaxtla mercury district, State of Guerrero, Mexico},
  author = {David Gallagher and Rafael. Perez Siliceo},
  year = {1948},
  doi = {10.3133/b960e},
  url = {https://pubs.usgs.gov/publication/b960E},
  note = {Source identifier: b960E}
}