@misc{indiciae25aa2bcc1f0a,
  title = {Geophysical abstracts, 92-95, January-December 1938. Geophysical abstracts 94, July-September 1938},
  author = {W. Ayzavoglou},
  year = {1939},
  doi = {10.3133/b909c},
  url = {https://pubs.usgs.gov/publication/b909C},
  note = {Source identifier: b909C}
}