@misc{indiciae105583bc8370,
  title = {How to construct two paper models showing the effects of glacial ice on a mountain valley},
  author = {Tau Rho Alpha},
  year = {1989},
  doi = {10.3133/ofr89190b},
  url = {https://pubs.usgs.gov/publication/ofr89190B},
  note = {Source identifier: ofr89190B}
}