@misc{indiciaefa9d2606fb47,
  title = {On the availability of geoscientific data and scientific collaborators of an in Africa},
  author = {David A. Hastings},
  year = {1982},
  doi = {10.1016/0016-7142(82)90018-7},
  url = {https://pubs.usgs.gov/publication/70140552},
  note = {Source identifier: 70140552}
}