@misc{indiciaeed0202c8cc30,
  title = {Comparing geotechnical to geologic estimates for past overburden in the Pierre-Hayes, South Dakota area: an argument for in-situ pressuremeter determination ( USA).},
  author = {D. S. Collins and T. C. Nichols},
  year = {1987},
  url = {https://pubs.usgs.gov/publication/70014789},
  note = {Source identifier: 70014789}
}