@misc{indiciae7d84a6192157,
  title = {Pegmatite investigations in Colorado, Wyoming, and Utah, 1942-1944},
  author = {J.B. Hanley and E. W. Heinrich and L. R. Page},
  year = {1950},
  doi = {10.3133/pp227},
  url = {https://pubs.usgs.gov/publication/pp227},
  note = {Source identifier: pp227}
}