@misc{indiciae923ea17b9398,
  title = {A preliminary review of coal exploration activities conducted by the government of Armenia and the coal resource potential of Armenia},
  author = {Peter D. Warwick and B.S. Pierce and E.R. Landis},
  year = {1993},
  doi = {10.3133/ofr93681},
  url = {https://pubs.usgs.gov/publication/ofr93681},
  note = {Source identifier: ofr93681}
}