@misc{indiciae4b7d3815bef3,
  title = {Geophysical abstracts 92-95, January-December 1938},
  author = {W. Ayvazoglou},
  year = {1938},
  doi = {10.3133/b909},
  url = {https://pubs.usgs.gov/publication/b909},
  note = {Source identifier: b909}
}