@misc{indiciae0b1cb63c5254,
  title = {Mineral resource potential of the Silver City 1° x 2° quadrangle, New Mexico - Arizona; Map H, manganese and manganese-iron resource potential},
  author = {Donald H. Richter and William N. Sharp},
  year = {1984},
  doi = {10.3133/ofr84629h},
  url = {https://pubs.usgs.gov/publication/ofr84629H},
  note = {Source identifier: ofr84629H}
}