@misc{indiciae19514fa465c8,
  title = {Major and trace elements in Mahogany zone oil shale in two cores from the Green River Formation, piceance basin, Colorado},
  author = {M. L. Tuttle and W.E. Dean and N. L. Parduhn},
  year = {1983},
  url = {https://pubs.usgs.gov/publication/70011267},
  note = {Source identifier: 70011267}
}