@misc{indiciae6923234a10d5,
  title = {Comparison of Macedon and Darwin glass},
  author = {D.R. Chapman and Klaus Keil and C. Annell},
  year = {1967},
  doi = {10.1016/0016-7037(67)90108-1},
  url = {https://pubs.usgs.gov/publication/70010546},
  note = {Source identifier: 70010546}
}