@misc{indiciae84db7cc0733e,
  title = {Organic composition of some Upper Cretaceous shale, Powder River Basin, Wyoming},
  author = {E. Allen Merewether and George E. Claypool},
  year = {1980},
  doi = {10.1306/2f918a68-16ce-11d7-8645000102c1865d},
  url = {https://pubs.usgs.gov/publication/70208030},
  note = {Source identifier: 70208030}
}