@misc{indiciaed5b5be34630d,
  title = {Preliminary landslide overview map of the conterminous United States},
  author = {D. H. Radbruch-Hall and R. B. Colton and W. E. Davis and B. A. Skipp and Ivo Lucchitta and D. J. Varnes},
  year = {1976},
  doi = {10.3133/mf771},
  url = {https://pubs.usgs.gov/publication/mf771},
  note = {Source identifier: mf771}
}