@misc{indiciae28a644ae9fb1,
  title = {Rio Blanco Oil Shale Project. Tract C-a / [c]by Rio Blanco Oil Shale Project. no.8, Progress report — Illustration, BHL page 39573473},
  year = {1974},
  url = {https://www.biodiversitylibrary.org/page/39573473},
  note = {Source identifier: page-39573473}
}