@misc{indiciaef835057e0be8,
  title = {Subsurface geology in petroleum exploration; a symposium edited by John D. Haun and L.W. LeRoy — Illustration, Page 581},
  year = {1958},
  url = {https://www.biodiversitylibrary.org/page/25248564},
  note = {Source identifier: page-25248564}
}