@misc{indiciaec81ed7fc7330,
  title = {Economic geology of the Independence quadrangle, Kansas},
  author = {Frank Charles Schrader and Erasmus Haworth},
  year = {1906},
  doi = {10.3133/b296},
  url = {https://pubs.usgs.gov/publication/b296},
  note = {Source identifier: b296}
}