@misc{indiciae6a7b025ab91d,
  title = {Petroleum geology and resources of the Middle Caspian Basin (South Mangyshlak, Terek-Caspian, and Stavropol-Prikumsk Petroleum Systems)},
  author = {G. F. Ulmishek},
  year = {1999},
  doi = {10.3133/ofr9950b},
  url = {https://pubs.usgs.gov/publication/ofr9950B},
  note = {Source identifier: ofr9950B}
}