@misc{indiciae1b9320b37cb1,
  title = {World distribution of soil, rock, and vegetation},
  author = {J.M. Goldberg and F.R. Fosberg and Marie-Helene Sachet and Allen Reimer},
  year = {1966},
  doi = {10.3133/ofr6650},
  url = {https://pubs.usgs.gov/publication/ofr6650},
  note = {Source identifier: ofr6650}
}