@misc{indiciae724c79a75d5c,
  title = {Map of selected geologic and topographic constraints to development in the Gillette, Wyoming area},
  author = {V. S. Williams and F.R. Shawe and J.S. Heller and Sophie Alwes},
  year = {1979},
  doi = {10.3133/mf1133},
  url = {https://pubs.usgs.gov/publication/mf1133},
  note = {Source identifier: mf1133}
}