@misc{indiciae077b8b6d498e,
  title = {Geophysical abstracts 140-143 January-December 1950, (Numbers 11679-12513)},
  year = {1950},
  doi = {10.3133/b976},
  url = {https://pubs.usgs.gov/publication/b976},
  note = {Source identifier: b976}
}