@misc{indiciae8cec93bfbeed,
  title = {Description, selection, and procurement of Shelburne Marble samples used to study effects of acid rain},
  author = {Malcolm Ross},
  year = {1985},
  doi = {10.3133/ofr85594},
  url = {https://pubs.usgs.gov/publication/ofr85594},
  note = {Source identifier: ofr85594}
}