@misc{indiciaea1020ffe516f,
  title = {Chemistry and mineralogy of natural bitumens and heavy oils and their reservoir rocks from the United States, Canada, Trinidad and Tobago, and Venezuela},
  author = {John W. Hosterman and R. F. Meyer and C.A. Palmer and M. W. Doughten and D.E. Anders},
  year = {1990},
  doi = {10.3133/cir1047},
  url = {https://pubs.usgs.gov/publication/cir1047},
  note = {Source identifier: cir1047}
}