@misc{indiciae66cc857699ed,
  title = {Paleomagnetic secular variation study of lavas from the Massif central, France},
  author = {Richard R. Doell},
  year = {1970},
  doi = {10.1016/0012-821x(70)90108-1},
  url = {https://pubs.usgs.gov/publication/70010270},
  note = {Source identifier: 70010270}
}