@misc{indiciae4a96dbc0cf93,
  title = {Geophysical abstracts 96-99, January-December, 1939. Geophysical abstracts 96, January-March 1939},
  author = {W. Ayzavoglou},
  year = {1940},
  doi = {10.3133/b915a},
  url = {https://pubs.usgs.gov/publication/b915A},
  note = {Source identifier: b915A}
}