@misc{indiciae6c77204d0ff2,
  title = {Geological significance of lead-alpha and isotopic age determinations of "alkalic" rocks of New England},
  author = {Priestley Toulmin},
  year = {1961},
  doi = {10.1130/0016-7606(1961)72[775:gsolai]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70220638},
  note = {Source identifier: 70220638}
}