@misc{indiciae31603add611e,
  title = {Worldwide directory of national earth-science agencies and related international organizations},
  author = {Wenonah E. Bergquist and E.J. Tinsley and Laura Yordy and R. L. Miller},
  year = {1981},
  doi = {10.3133/cir834},
  url = {https://pubs.usgs.gov/publication/cir834},
  note = {Source identifier: cir834}
}