@misc{indiciae4d6054b334c2,
  title = {Geophysical abstracts 108-111: January-December 1942},
  author = {W. Ayvazoglou},
  year = {1943},
  doi = {10.3133/b939},
  url = {https://pubs.usgs.gov/publication/b939},
  note = {Source identifier: b939}
}