@misc{indiciae06a157107a85,
  title = {An Introduction to Using Surface Geophysics to Characterize Sand and Gravel Deposits},
  author = {Jeffrey E. Lucius and William H. Langer and Karl J. Ellefsen},
  year = {2007},
  doi = {10.3133/cir1310},
  url = {https://pubs.usgs.gov/publication/cir1310},
  note = {Source identifier: cir1310}
}