@misc{indiciae60ec4499d529,
  title = {Palaeomagnetism and potassium-argon ages of volcanic rocks of Ngorongoro caldera, Tanzania},
  author = {C. S. Grommé and T. A. Reilly and A. E. Mussett and R. L. Hay},
  year = {1971},
  doi = {10.1111/j.1365-246x.1971.tb03585.x},
  url = {https://pubs.usgs.gov/publication/70227463},
  note = {Source identifier: 70227463}
}