@misc{indiciae469ecabd7dda,
  title = {Bedrock geologic map of the Hubbard Brook experimental forest, Grafton County, New Hampshire},
  author = {W.C. Burton and G. J. Walsh and T. R. Armstrong},
  year = {2000},
  doi = {10.3133/ofr0045a},
  url = {https://pubs.usgs.gov/publication/ofr0045A},
  note = {Source identifier: ofr0045A}
}