@misc{indiciae11012838d23d,
  title = {Coal exploration Stage I, Uatsi Project, Baja Talamanca, Costa Rica; results and recommendations},
  author = {I.K. Bolanos and E.R. Landis and S. B. Roberts and J. N. Weaver},
  year = {1986},
  doi = {10.3133/ofr86121},
  url = {https://pubs.usgs.gov/publication/ofr86121},
  note = {Source identifier: ofr86121}
}