@misc{indiciae8987d610edd4,
  title = {Geophysical abstracts 96-99, January-December, 1939. Geophysical abstracts 97, April-June 1939},
  author = {W. Ayzavoglou},
  year = {1940},
  doi = {10.3133/b915b},
  url = {https://pubs.usgs.gov/publication/b915B},
  note = {Source identifier: b915B}
}