@misc{indiciae56bc2ea29f27,
  title = {A possible bedrock source for obsidian found in archeological sites in northwestern Alaska},
  author = {W. W. Patton and T. P. Miller},
  year = {1970},
  doi = {10.1126/science.169.3947.760},
  url = {https://pubs.usgs.gov/publication/70010086},
  note = {Source identifier: 70010086}
}