@misc{indiciae638ff787c159,
  title = {Leasable mineral and waterpower land classification map of the Billings 1° x 2° quadrangle, Montana and Wyoming},
  author = {A. F. Bateman and E. G. Allen and G. A. Lutz},
  year = {1977},
  doi = {10.3133/i1011},
  url = {https://pubs.usgs.gov/publication/i1011},
  note = {Source identifier: i1011}
}