@misc{indiciae8ed57df1d31f,
  title = {Pennsylvanian carbonates, paleoecology, and stratigraphy, north flank, eastern Brooks Range, Arctic Alaska},
  author = {Augustus K. Armstrong},
  year = {1971},
  doi = {10.3133/ofr719},
  url = {https://pubs.usgs.gov/publication/ofr719},
  note = {Source identifier: ofr719}
}