@misc{indiciae90f0d0ab16bb,
  title = {Geophysical log signatures of lower Tertiary and upper Cretaceous rocks in the Powder River Basin, Wyoming and Montana},
  author = {David A. Seeland and J.K. Hardie and A. B. Gibbons and E. A. Johnson and L.R. Biewick and M.W. McLellan and C. L. Molnia and F. W. Pierce},
  year = {1993},
  doi = {10.3133/oc140},
  url = {https://pubs.usgs.gov/publication/oc140},
  note = {Source identifier: oc140}
}