@misc{indiciaeb8cc4f71602b,
  title = {Carbon isotopic comparisons of oil products used in the developmental history of Alaska},
  author = {K.A. Kvenvolden and P.R. Carlson and A. Warden and C. N. Threlkeld},
  year = {1998},
  doi = {10.1016/s0009-2541(98)00097-7},
  url = {https://pubs.usgs.gov/publication/70020542},
  note = {Source identifier: 70020542}
}