@misc{indiciaefadbaab417ce,
  title = {Petrography, mineralogy, and reservoir characteristics of the Upper Cretaceous Mesaverde Group in the east-central Piceance Basin, Colorado},
  author = {Janet K. Pitman and Charles W. Spencer and Richard M. Pollastro},
  year = {1989},
  doi = {10.3133/b1787g},
  url = {https://pubs.usgs.gov/publication/b1787G},
  note = {Source identifier: b1787G}
}