@misc{indiciae72bfd2170143,
  title = {Geophysical abstracts, 92-95, January-December 1938. Geophysical abstracts 92, January-March 1938},
  author = {W. Ayvazoglou},
  year = {1938},
  doi = {10.3133/b909a},
  url = {https://pubs.usgs.gov/publication/b909A},
  note = {Source identifier: b909A}
}