@misc{indiciaeabe8ea2dfa55,
  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/ofr89190a},
  url = {https://pubs.usgs.gov/publication/ofr89190A},
  note = {Source identifier: ofr89190A}
}