@misc{indiciae3f74ef5c6630,
  title = {Reconnaissance study of the thickness of the unsaturated zone in the western conterminous United States},
  author = {M. S. Bedinger and William H. Langer},
  year = {1986},
  doi = {10.3133/ofr86402w},
  url = {https://pubs.usgs.gov/publication/ofr86402W},
  note = {Source identifier: ofr86402W}
}