@misc{indiciae5f8a64375374,
  title = {Guide to your first use of the Image 100, a slide-cassette training module},
  author = {Dale G. Gehring},
  year = {1976},
  doi = {10.3133/ofr76613},
  url = {https://pubs.usgs.gov/publication/ofr76613},
  note = {Source identifier: ofr76613}
}