@misc{indiciae3f7673fc0343,
  title = {Petrography of sedimentary rocks in the Slick Rock district, San Miguel and Dolores Counties, Colorado},
  author = {D. R. Shawe},
  year = {1968},
  doi = {10.3133/pp576b},
  url = {https://pubs.usgs.gov/publication/pp576B},
  note = {Source identifier: pp576B}
}