@misc{indiciae0c1b25bd895d,
  title = {Geophysical abstracts 88-91, January-December 1937},
  author = {W. Ayvazoglou},
  year = {1938},
  doi = {10.3133/b895},
  url = {https://pubs.usgs.gov/publication/b895},
  note = {Source identifier: b895}
}