@misc{indiciae639c0a74e663,
  title = {Heavy oil and natural bitumen resources in geological basins of the world},
  author = {Richard F. Meyer and Emil D. Attanasi and Philip A. Freeman},
  year = {2007},
  doi = {10.3133/ofr20071084},
  url = {https://pubs.usgs.gov/publication/ofr20071084},
  note = {Source identifier: ofr20071084}
}