@misc{indiciae0c839c14a2d5,
  title = {Isotopic data for Late Cretaceous intrusions and associated altered and mineralized rocks in the Big Belt Mountains, Montana},
  author = {Edward A. du Bray and Daniel M. Unruh and Albert H. Hofstra},
  year = {2017},
  doi = {10.3133/ds1040},
  url = {https://pubs.usgs.gov/publication/ds1040},
  note = {Source identifier: ds1040}
}