@misc{indiciaeb2ecc20abcbd,
  title = {Geophysical abstracts, 88-91, January-December 1937. Geophysical abstracts 90, July-September 1937},
  author = {W. Ayvazoglou},
  year = {1938},
  doi = {10.3133/b895c},
  url = {https://pubs.usgs.gov/publication/b895C},
  note = {Source identifier: b895C}
}