@misc{indiciae28969ddb61b3,
  title = {Leasable mineral and waterpower land classification map, Ekalaka Quadrangle, Montana, showing lands withdrawn, classified, and valuable prospectively for leasable minerals and occurrences of other selected minerals; lands withdrawn or classified for waterpower and reservoir sites},
  author = {Andrew F. Bateman and E. G. Allen and Gale Alex Lutz},
  year = {1975},
  doi = {10.3133/ofr75191},
  url = {https://pubs.usgs.gov/publication/ofr75191},
  note = {Source identifier: ofr75191}
}