@misc{indiciaefd34a67c7ce1,
  title = {Resource materials for a GIS spatial analysis course},
  author = {Gary L. Raines},
  year = {2001},
  doi = {10.3133/ofr2001221},
  url = {https://pubs.usgs.gov/publication/ofr2001221},
  note = {Source identifier: ofr2001221}
}