@misc{indiciaefb9b8c9c3302,
  title = {Maps showing distribution of selected accessory minerals in the Montezuma stock, Summit County, Colorado},
  author = {G. J. Neuerburg},
  year = {1971},
  doi = {10.3133/i608},
  url = {https://pubs.usgs.gov/publication/i608},
  note = {Source identifier: i608}
}